Annual Review of Pteridological Research - 2000

Literature Citations All Citations

1. Adhya, T. K., K. Bharati, S. R. Mohanty, B. Ramakrishnan, V. R. Rao, N. Sethunathan & R. Wassmann. 2000. Methane emission from rice fields at Cuttack, India. Nutrient Cycling in Agroecosystems 58: 95-105. [Azolla]

2. Ahlenslager, K. E. 2000. Conservation of rare plants on public lands. American Journal of Botany 87 Suppl. 6: 89. [Abstract]

3. Alam, M. S., N. Chopra, M. Ali & M. Niwa. 2000. Normethyl pentacyclic and lanostane-type triterpenes from Adiantum venustum. Phytochemistry (Oxford) 54: 215-220.

4. Allam, A. F. 2000. Evaluation of different means of control of snail intermediate host of Schistosoma mansoni. Journal of the Egyptian Society of Parasitology 30: 441-450. [Azolla pinnata]

5. Allison, A. & F. Kraus. 2000. A new species of frog of the genus Xenorhina (Anura: Microhylidae) from the north coast ranges of Papua New Guinea. Herpetologica 56: 285-294. [Asplenium]

6. Alonso-Amelot, M. E., M. P. Calcagno & M. Perez-Injosa. 2000. Growth and selective defensive potential in relation to altitude in neotropical Pteridium aquilinum var. caudatum. Pp. 43-47. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

7. Alonso-Amelot, M. E., U. F. Castillo, M. Avendano, B. L. Smith & D. R. Lauren. 2000. Milk as a vehicle for the transfer of ptaquiloside, a bracken carcinogen. Pp. 86-90. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

8. Alonso-Amelot, M. E. & A. Oliveros. 2000. A method for the practical quantification and kinetic evaluation of cyanogenesis in plant material. Application to Pteridium aquilinum and Passiflora capsularis. Phytochemical Analysis 11: 309-316.

9. Alpert, P. 2000. The discovery, scope, and puzzle of desiccation tolerance in plants. Plant Ecology 151: 5-17.

10. Anani, K., J. B. Hudson, C. de Souza, K. Akpagana, G. H. N. Tower, J. T. Arnason & M. Gbeassor. 2000. Investigation of medicinal plants of Togo for antiviral and antimicrobial activities. Pharmaceutical Biology 38: 40-45. [Davallia chaerophylloides]

11. Antony, R. S., A. E. Khan & J. Thomas. 2000. Rare, endangered and threatened ferns from Chemunji hills, Kerala. Journal of Economic & Taxonomic Botany 24: 413-415.

12. Archer, R. C. 2000. Response of native ferns in the garden to heat and drought stress. Hardy Fern Foundation Quarterly 10: 18-20.

13. Archer, R. C. 2000. The effect of heat and drought stress on native ferns during the growth cycle of the following year. Hardy Fern Foundation Quarterly 10: 56-60.

14. Archer, R. C. & B. Hamilton. 2000. Observations on the effect of heat and drought on native mid-western ferns. Hardy Fern Foundation Quarterly 10: 15-17.

15. Arens, N. C. & P. S. Baracaldo. 2000. Variation in tree fern stipe length with canopy height: Tracking preferred habitat through morphological change. American Fern Journal 90: 1-15. [Cyathea caracasana]

16. Arnautova, E. M. 2000. The study of fern Pleurosoriopsis (Pleurosoriopsidaceae) gametophyte and its significance for systematics of the genus. Botanicheskii Zhurnal (St. Petersburg) 85: 100-105. [Russian]

17. Ash, S. 2000. Evidence of oribatid mite herbivory in the stem of a Late Triassic tree fern from Arizona. Journal of Paleontology 74: 1065-1071.

18. Ashcroft, C. J. & E. Sheffield. 2000. The effect of spore density on germination and development in Pteridium, monitored using a novel culture technique. American Fern Journal 90: 91-99.

19. Ater, M. 2000. A phytogeochemical survey of the flora of ultramafic and adjacent normal soils in North Morocco. Plant & Soil 218: 127-135. [Notholaena marantae]

20. Atmane, N., A. S. Blervacq, N. Michaux-Ferriere & J. Vasseur. 2000. Histological analysis of indirect somatic embryogenesis in the Marsh clubmoss Lycopodiella inundata (L.) Holub (Pteridophytes). Plant Science (Shannon) 156: 159-167.

21. Avonce, N., R. M. Figueroa, O. Moscorro, P. Van Dijk, J. Thevelein & G. Iturriaga. 2000. Overexpression of plant TPS genes in yeast and transgenic plants: High levels of trehalose accumulation. Comparative Biochemistry & Physiology. Part A, Molecular & Integrative Physiology 126A(Suppl. 1): S72. [Abstract& Selaginella lepidophylla]

22. Axsmith, B. J., E. L. Taylor, T. N. Taylor & N. R. Cuneo. 2000. New perspectives on the Mesozoic seed fern order Corystospermales based on attached organs from the Triassic of Antarctica. American Journal of Botany 87: 757-768.

23. Aziz, A. 2000. Synura uvella Ehr. (Chrysophyceae): A new record for Bangladesh. Bangladesh Journal of Botany 29: 79-80. [Azolla pinnata]

24. Aziz, A. & S. Sharmin. 2000. Growth and nitrogenase activity of Azolla pinnata var. pinnata R. Brown as affected by some environmental factors. Bangladesh Journal of Botany 29: 125-131.

25. Azovsky, M. G. 2000. Addition to the flora of hydrophytes of the Baikal lake. Botanicheskii Zhurnal (St. Petersburg) 85: 88-93. [Russian& Lycopsida]

26. Bajpai, U. & H. K. Maheshwari. 2000. Ultrastructure of the leaf cuticle of Pachypteris indica and its comparison with that of Komlopteris indica. Acta Palaeobotanica 40:

27. Bakker, F. T., A. Culham, R. Gomez-Martinez, J. Carvalho, J. Compton, R. Dawtrey & M. Gibby. 2000. Patterns of nucleotide substitution in angiosperm cpDNA trnL (UAA)-trnF (GAA) regions. Molecular Biology & Evolution 17: 1146-1155. [Huperzia]

28. Baksh-Comeau, Y. S. 2000. Checklist of the pteridophytes of Trinidad & Tobago. Fern Gazette 16: 11-122.

29. Balakrishnan, N. & S. K. Sharma. 2000. Role of water fern, Azolla microphylla in controlling the larval breeding of mosquitoes in paddy fields at Coimbatore (South India). Journal of Entomological Research (New Delhi) 24: 39-42.

30. Banerji, J. 2000. Occurrence of angiosperm remains in an Early Cretaceous intertrappean bed, Rajmahal Basin, India. Cretaceous Research 21: 781-784.

31. Banks, J. A. 2000. Genetic and epigenetic factors that control sex determination in ferns. Journal of Reproduction & Development 46: 41-42.

32. Barcelona, J. F. 2000. Systematics of the fern genus Odontosoria sensu lato (Lindsaeaceae). Miami University, Ohio. 326 pp. [Dissertation]

33. Barik, S. K., S. Mishra & S. Ayyappan. 2000. Decomposition patterns of unprocessed and processed lignocellulosics in a freshwater fish pond. Aquatic Ecology 34: 185-204. [Salvinia cucullata]

34. Barreto, R., R. Charudattan, A. Pomella & R. Hanada. 2000. Biological control of neotropical aquatic weeds with fungi. Crop Protection 19: 697-703. [Salvinia auriculata, Salvinia molesta]

35. Bauder, E. T. 2000. Inundation effects on small-scale plant distributions in San Diego, California vernal pools. Aquatic Ecology 34: 43-61. [Isoetes orcuttii]

36. Bednara, J., I. Gielwanowska, E. Szczuka & D. Tchorzewska. 2000. Immunofluorescence of the microtubular cytoskeleton during sporocyte development in Ophioglossum vulgatum L. Acta Biologica Cracoviensia Series Botanica 42: 18. [Abstract]

37. Bell, F. W., M. T. Ter-Mikaelian & R. G. Wagner. 2000. Relative competitiveness of nine early-successional boreal forest species associated with planted jack pine and black spruce seedlings. Canadian Journal of Forest Research 30: 790-800. [Pteridium aquilinum]

38. Beniston, R. G., I. M. Morgan, V. O'Brien & M. S. Campo. 2000. Synergy between papillomavirus and quercetin: significance of quercetin-induced GI arrest for cellular transformation. Pp. 123-127. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

39. Bennert, H. W. 2000. Reprodukstionsbiologische Besonderheiten und Polypoloidie bei Farnpflanzen (Pteridophyta) ihre Bedeutung fuer die genetische Vielfalt von Populationen. Schriftenr. Vegetationskunde 32: 47-55. [German]

40. Bennert, H. W. 2000. Risk assessment in German pteridophytes: Methods and results of a field survey. Zeitschrift fur Okologie und Naturschutz 9: 27-34.

41. Bennert, H. W., K. Horn & S. Jessen. 2000. XII-3.1 Farnpflanzen. Pp. 1-13. In W. Konold, R. Boecker & U. Hampicke (Eds.). Handbuch Naturschutz und Landschaftspflege, 3. Erganzungslieferung. Ecomed, Landsberg. [German]

42. Benoit, E., D. Laurent, C. Mattei, A.-M. Legrand & J. Molgo. 2000. Reversal of pacific ciguatoxin-1B effects on myelinated axons by agents used in ciguatera treatment. Cybium 24: 33-40. [Davallia solida]

43. Benton, M. J., S. Bouaziz, E. Buffetaut, D. Martill, M. Ouaja, M. Soussi & C. Trueman. 2000. Dinosaurs and other fossil vertebrates from fluvial deposits in the Lower Cretaceous of southern Tunisia. Palaeogeography Palaeoclimatology Palaeoecology 157: 227-246.

44. Bercu, R. 2000. The structural organization of the corme in fern Adiantum capillus-veneris L. (Adiantaceae (S. Presl.) Ching). Ukrayins'Kyi Botanichnyi Zhurnal 57: 195-200.

45. Berg, R. Y. 2000. Discovery and collecting of the rare fern Diplazium sibiricum in Norway. Blyttia 58: 93-110. [Norwegian]

46. Berry, C. M. 2000. A reconsideration of Wattieza Stockmans (here attributed to Cladoxylopsida) based on a new species from the Devonian of Venezuela. Review of Palaeobotany & Palynology 112: 125-146.

47. Bhalerao, E. B., S. L. Laware, R. R. Vaidya & K. N. Dhumal. 2000. Effect of Aspidium cicutarium rhizome extract on seed germination and seedling growth of jowar and bajara. Journal of Medicinal & Aromatic Plant Sciences 22-23: 499-501.

48. Bhalerao, E. B., S. L. Laware, R. R. Vaidya & K. N. Dhumal. 2000. Influence of leaf leachates of Pteridium and Aspidium on physiology of Mentha. Journal of Medicinal & Aromatic Plant Sciences 22-23: 502-504.

49. Bharati, K., S. R. Mohanty, D. P. Singh, V. R. Rao & T. K. Adhya. 2000. Influence of incorporation or dual cropping of Azolla on methane emission from a flooded alluvial soil planted to rice in eastern India. Agriculture Ecosystems & Environment 79: 73-83.

50. Bhardwaja, T. N. 2000. The continuing Marsilea trail: in retrospect. Indian Fern Journal 17: 50-60.

51. Bhatti, J. S. 2000. Revision of Trichromothrips and related genera (Terebrantia: Thripidae). Oriental Insects 34: 1-65. [Microsorum pteropus]

52. Bidin, A. A. 2000. Contributions to the cytology and taxonomy of the ferns of Malaysia. Malayan Nature Journal 54: 289-304.

53. Birch, C. P. D., N. Vuichard & B. R. Werkman. 2000. Modelling the effects of patch size on vegetation dynamics: Bracken (Pteridium aquilinum (L.) Kuhn) under grazing. Annals of Botany (London) 85(Suppl. B): 63-76.

54. Birch, C. P. D., N. Vuichard & B. R. Werkman. 2000. Modelling the effects of patch size on vegetation dynamics: bracken (Pteridium aquilinum) under grazing. Pp. 188. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract]

55. Birks, H. H. 2000. Aquatic macrophyte vegetation development in Krakenes Lake, western Norway, during the late-glacial and early-Holocene. Journal of Paleolimnology 23: 7-19. [Isoetes echinospora, Isoetes lacustris]

56. Birnie, R. V., D. R. Miller, P. L. Horne, S. Leadbeater & A. MacDonald. 2000. The potential distribution and impact of bracken in upland Scotland: An assessment using a GIS-based niche model. Annals of Botany (London) 85(Suppl. B): 53-62. [Pteridium aquilinum]

57. Birnie, R. V., D. R. Miller, P. L. Horne, S. Leadbeater & A. MacDonald. 2000. The potential distribution and impact of bracken in upland Scotland: an assessment using a GIS-based niche model. Pp. 186. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract& Pteridium aquilinum]

58. Blackmore, S., M. Takahashi & K. Uehara. 2000. A preliminary phylogenetic analysis of sporogenesis in pteridophytes. Pp. 109-124. In M. M. Harley, C. M. Morton & S. Blackmore (Eds.). Pollen and spores: morphology and biology. Royal Botanic Gardens, Kew.

59. Bociag, K. 2000. Impact of humic substances on the structure of the vegetation of hardwater lakes. Publications of the Dept. Plant Tax. UAM, No 10, Poznan. 161-168 pp.

60. Bonalberti Peroni, C., A. Peroni & G. Peroni. 2000. Flora pteridologica della Macaronesia. Parte 1: Isole Canarie. Pagine Botaniche, Milano 25: 46-67. [Italian]

61. Boonkerd, T. & N. Pollawatn. 2000. Pteridophytes in Thailand. Office of Environmental Policy and Planning, Bangkok.

62. Boublik, K. 2000. A new locality of four species of the genus Diphasiastrum in the Jihlavske vrchy hills (SE Bohemia). Zpravy Ceske Bot. Spol. (Prague) 35: 61-65.

63. Boudrie, M. 2000. Fougeres et plantes alliees. Pp. 87-92. In Espaces Naturels du Limousin (Ed.). Le Limousin cote nature - Milieux, faune, flore. Saint-Gence. [French]

64. Boudrie, M. & H. Lassagne. 2000. Discovery of a very rare hybrid fern in France, Asplenium x dolosum Milde (Aspleniaceae, Pteridophyta). Acta Botanica Gallica 147: 233-242. [French]

65. Bradbury, J. P. 2000. Limnologic history of Lago de Patzcuaro, Michoacan, Mexico for the past 48,000 years: Impacts of climate and man. Palaeogeography Palaeoclimatology Palaeoecology 163: 69-95. [Isoetes]

66. Brande, A. 2000. On the history of the landscape, vegetation, and uses in the area of the Krummes Fen (Berlin-Zehlendorf). Verhandlungen des Botanischen Vereins Von Berlin und Brandenburg 133: 27-44. [German& Pteridium]

67. Brea, M. 2000. Triassic paleoflora from Agua de la Zorra, Uspallata, Mendoza province, Argentina: Lycophyta and Filicophyta. Ameghiniana 37: 199-204. [Spanish]

68. Brezinski, D. K. 2000. Lower Mississippian trilobites from southern New Mexico. Journal of Paleontology 74(6). Nov., 2000. 1043-1064:

69. Calderon-Saenz, E. 2000. Production of adventitious buds on the leaves in Dicksonia sellowiana. American Fern Journal 90: 105-108.

70. Camargo, A. F. M. & E. R. Florentino. 2000. Population dynamics and net primary production of the aquatic macrophyte Nymphaea rudgeana C. F. Mey in a lotic environment of the Itanhaem River basin (SP, Brazil). Revista Brasileira de Biologia 60: 83-92. [Salvinia molesta]

71. Camp, M. S., R. G. Beniston, J. A. Connolly & G. J. Grindlay. 2000. Bracken fern in carcinogenesis of the upper gastrointestinal tract in cattle and humans: quercetin and cell transformation. Pp. 114-123. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

72. Cantrill, D. J. 2000. A new macroflora from the South Orkney Islands, Antarctica: Evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate. Antarctic Science 12: 185-195.

73. Cantrill, D. J. 2000. A Cretaceous (Aptian) flora from President Head, Snow Island, Antarctica. Palaeontographica Abteilung B Palaeophytologie 253: 153-191.

74. Caplen, C. A. & C. R. Werth. 2000. Isozymes of the Isoetes riparia complex, I. Genetic variation and relatedness of diploid species. Systematic Botany 25: 235-259.

75. Caplen, C. A. & C. R. Werth. 2000. Isozymes of the Isoetes riparia complex, II. Ancestry and relationships of polyploids. Systematic Botany 25: 260-280.

76. Carcamo, H. A., T. A. Abe, C. E. Prescott, F. B. Holl & C. P. Chanway. 2000. Influence of millipedes on litter decomposition, N mineralization, and microbial communities in a coastal forest in British Columbia, Canada. Canadian Journal of Forest Research 30: 817-826. [Polystichum munitum]

77. Carlquist, S. & E. L. Schneider. 2000. SEM studies on vessels in ferns. 18. Montane cheilanthoid ferns (Pteridaceae) of North America. Aliso 19: 31-39.

78. Carlquist, S. & E. L. Schneider. 2000. SEM studies of vessels in ferns: 14. Ceratopteris. Aquatic Botany 66: 1-8.

79. Carlquist, S. & E. L. Schneider. 2000. SEM studies on vessels in ferns. 16. Pacific tree ferns (Blechnaceae, Cyatheaceae, Dicksoniaceae). Pacific Science 54: 75-86.

80. Carlquist, S., E. L. Schneider & C. H. Lamoureux. 2000. SEM studies on vessels in ferns. 20. Hawaiian Hymenophyllaceae. Pacific Science 54: 365-375.

81. Carlsen, M. 2000. Structure and diversity of the vascular epiphyte community in the overstory of a tropical rain forest in Surumoni, Amazonas State, Venezuela. Selbyana 21: 7-10. [Microgramma baldwinii]

82. Caroe, I., A. S. Barfod & J. E. Lawesson. 2000. Temporal dynamics of the ground vegetation in a Danish beech forest. Nordic Journal of Botany 20: 585-597. [Athyrium filix-femina]

83. Carrapico, F., G. Teixeira & M. A. Diniz. 2000. Azolla as a biofertiliser in Africa. A challenge for the future. Revista de Ciencias Agrarias 23: 120-138.

84. Casarotto, N. 2000. New station of Matteuccia struthiopteris (L.) Todaro (Pteridophyta& Athyriaceae) in Venetian Prealps (Vicenza). Societa Veneziana di Scienze Naturali Lavori 25: 125-126. [Italian]

85. Castaneda, R. R. F. & G. Heredia. 2000. Carrismyces, a new genus of hyphomycetes from a cloud forest in Mexico. Mycotaxon 76: 125-130. [Cyathea]

86. Castillo, U. F., M. Ojika, Y. Sakagami, D. R. Lauren, M. E. Amelot & B. L. Smith. 2000. Isolation and structural determination of three new toxic illudane-type sesquiterpene glucosides and a new protoilludane sesquiterpene from Pteridium. Pp. 55-59. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

87. Caulton, E., S. Keddie & R. Carmichael. 2000. A 10-year study of the incidence of spores of bracken (Pteridium aquilinum) in an urban rooftop airstream in south-east Scotland. Pp. 189. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract]

88. Ceska, A. & O. Ceska. 2000. Isoetes minima A. A. Eaton (Isoetaceae) an overlooked terrestrial quillwort of the Pacific Northwest. American Journal of Botany 87 Suppl. 6: 93. [Abstract]

89. Chandra, S. 2000. Ferns of India. International Book Distributors, Dehradun India. 459 pp.

90. Chandra, S. 2000. Companion to "A Census of Indian Pteridophytes". Taiwania 45: 38-65.

91. Chandra, S. & P. B. Khare. 2000. Role of isolating mechanism in ferns. Recent Trends in Botanical Research, Professor D. D. Nautiyal Comm. Volume: 121-129.

92. Chatterjee, A., D. M. Porterfield, P. S. Smith & S. J. Roux. 2000. Gravity-directed calcium current in germinating spores of Ceratopteris richardii. Planta (Berlin) 210: 607-610.

93. Chatterjee, A. & S. J. Roux. 2000. Ceratopteris richardii: A productive model for revealing secrets of signaling and development. Journal of Plant Growth Regulation 19: 284-289.

94. Chauhan, D. K. (Ed.). 2000. Recent Trends in Botanical Research. Univeristy of Allahabad, Allahabad India. 340 pp.

95. Chen, S. H. & S. Y. Huang. 2000. Aeropalynological study of Yangmingshan National Park, Taiwan. Taiwania 45: 281-295. [Cyathea]

96. Chew, F. T., S. H. Lim, H. S. Shang, D. M. D. Siti, D. T. Goh, B. W. Lee, H. T. W. Tan & T. K. Tan. 2000. Evaluation of the allergenicity of tropical pollen and airborne spores in Singapore. Allergy (Copenhagen) 55: 340-347. [Dicranopteris linearis]

97. Chiou, W. L., P. H. Lee & S. S. Ying. 2000. Reproductive biology of gametophytes of Cyathea podophylla (Hook.) Copel. Taiwan Journal of Forest Science 15: 1-12.

98. Chiou, W. L., K. C. Yang, Y. P. Yang, K. S. Hsu & S. Y. Chen. 2000. Type specimens in the herbarium of Taiwan Forestry Research Institute. I. Pteridophyta. Taiwan Forestry Research Institute Ext. 118: 1-92.

99. Chopra, N., M. S. Alam, M. Ali & Niwa, M. 2000. A new lanostane triterpenic ether from Adiantum venustum. Pharmazie 55: 538-539.

100. Chowdhury, M. A. M., M. K. Huda & A. S. M. T. Islam. 2000. Phytodiversity of Dipterocarpus turbinatus Gaertn.F. (Garjan) undergrowths at Dulahazara Garjan forest, Cox's Bazar, Bangladesh. Indian Forester 126: 674-684.

101. Chu, W. M. & Z. R. He. 2000. Taxonomic notes on some pteridophytes from Yunnan (II). Acta Botanica Yunnanica 22: 255-262. [Chinese]

102. Chuakul, W. 2000. Medicinal plants in Khao Kho District, Phetchabun Province, Thailand. Pharmaceutical Biology 38: 61-67.

103. Chuakul, W. & P. Saralamp. 2000. Medicinal plants used in Phu Khieo wildlife sanctuary area, Chaiyaphum Province (Thailand). Acta Phytotaxonomica et Geobotanica 51: 67-98.

104. Chung, C. C. & H. T. Im. 2000. Reconsideration on Korean names of four taxa of Ophioglossum with the new information on O. petiolatum. Korean Journal of Plant Taxonomy 30: 155-162. [Korean]

105. Clifford, H. T. & M. R. Pemberton. 2000. Stem casts of Leptophloeum australe (McCoy) Walton and the response of their leaf-cushion bases to compression. Memoirs of the Queensland Museum 45: 227-233.

106. Coelho, F. F., F. S. Lopes & C. F. Sperber. 2000. Density-dependent morphological plasticity in Salvinia auriculata Aublet. Aquatic Botany 66: 273-280.

107. Colli, A. M. T., S. A. Souza & R. Toler da Silva. 2000. Preliminary survey at Porto Ferreira State Park, SP, Brazil. Anais do II Congresso Brazileiro de Unidades de Conservacao: 418-425.

108. Colli, A. M. T. & M. Takaki. 2000. Germination of Thelypteris dentata after exposure to different periods of time. Revista de Tecnologia e Ambiente: 25-29.

109. Colli, A. M. T. & M. Takaki. 2000. Effect of red light on the spore germination of Thelypteris dentata. Vegetalia 34: 11-19.

110. Collinson, M. E., C. Featherstone, J. A. Cripps, G. J. Nichols & A. C. Scott. 2000. Charcoal-rich plant debris accumulations in the lower Cretaceous of the Isle of Wight, England. Acta Palaeobotanica Suppl. 2: 93-105.

111. Cottnam, C. F., A. R. Hemsley, R. Rossler, M. E. Collinson & A. P. R. Brain. 2000. Diversity of exine structure in Upper Carboniferous (Westphalian) selaginellalean megaspores. Review of Palaeobotany & Palynology 109: 33-44.

112. Cove, D. J. 2000. The generation and modification of cell polarity. Journal of Experimental Botany 51: 831-838.

113. Cranfill, R. 2000. Has ecological specialization driven a fundamental phylogenetic split in the Polypodiales- American Journal of Botany 87 Suppl. 6: 93. [Abstract]

114. Cuneo, N. R., S. Archangelsky & S. N. Cesari. 2000. Asterotheca frenguellii (Archangelsky and de la Sota) nov. comb., Permian fern from Patagonia, Argentina. Ameghiniana 37: 363-367. [Spanish]

115. Czarnecka, J. 2000. Heavily transformed areas chance for Marsh club moss Lycopodiella inundata. Przeglad Przyrodniczy XI, 2-3: 65-72.

116. Das, S. 2000. Taxonomic revision and conservation strategies of some multipinnate species of fern genus Asplenium L. in India. Indian Fern Journal 17: 109-128.

117. Dawra, R. K., O. P. Sharma & R. Somvanshi. 2000. Bovine enzootic haematuria in India. Pp. 150-155. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

118. Dawson, M. I., P. J. Brownsey & J. D. Lovis. 2000. Index of chromosome numbers of indigenous New Zealand pteridophytes. New Zealand Journal of Botany 38: 25-46.

119. De, A. B. 2000. Uredo thelypteridis var. stipitata var. nov. Mycotaxon 74: 131-134. [Pseudophegopteris aurita]

120. de Foucault, B. 2000. Contribution to the knowledge of ecological and phytosociological affinities of Malaysian Nepenthes. Acta Botanica Gallica 147: 111-115. [French& Dicranopteris linearis]

121. de la Cretaz, A. L. 2000. Understory restoration in a watershed degraded by deer browsing and fern invasion. University of Massachusetts, Amherst. 135 pp. [Dissertation& Dennstaedtia puntilobula]

122. de la Sota, E. R., L. A. Cassa de Pazos & M. M. Ponce. 2000. Grammitidaceae (Pteridophyta) from Argentina and Chile. Darwiniana (San Isidro) 38: 299-306. [Spanish]

123. de Lange, P. J. & M. Christian. 2000. Hypolepis distans (Dennstaedtiaceae) a casual introduction to Norfolk Island. New Zealand Bot. Soc. Newsletter 61: 17-18.

124. Delgado Vazquez, A. J. & L. F. Sanchez Tundidor. 2000. About Pteris vittata in Cadiz and Malaga provinces. Acta Botanica Malacitana 25: 231. [Spanish]

125. Deng, S. H., K. Q. Sun & C. S. Li. 2000. A new Gleicheniaceous fern Chansitheca (Sphenopteris) wudaensis from the Lower Permian of Wuda, Nei Mongol, China. Acta Botanica Sinica 42: 533-538.

126. Dieguez, C. & N. Melendez. 2000. Early Cretaceous ferns from lacustrine limestones at Las Hoyas, Cuenca province, Spain. Palaeontology (Oxford) 43: 1113-1141.

127. DiMichele, W. A., D. S. Chaney, W. H. Dixon, W. J. Nelson & R. W. Hook. 2000. An early permian coastal flora from the Central Basin Platform of Gaines County, West Texas. Palaios 15: 524-534.

128. Dixit, R. D. 2000. Conspectus of pteridophytic diversity in India. Indian Fern Journal 17: 77-91.

129. Dorr, L. J., B. Stergios, A. R. Smith & A. N. L. Cuello. 2000. Catalogue of the vascular plants of Guaramacal National Park, Portuguesa and Trujillo States, Venezuela. Contributions From the United States National Herbarium 40: 7-151.

130. Doweld, A. B. 2000. Novikocarpus (Pachytestopsida) and Adenopterygium (Peltaspermopsida): Two new generic names for fossil plants. Botanicheskii Zhurnal (St. Petersburg) 85: 115-119. [Russian]

131. Doweld, A. B. 2000. Eocooksonia, a new substitute name for Cooksonella (Cooksoniaceae-Rhyniophyta). Taxon 49: 547.

132. Duff, R. J. & E. E. Schilling. 2000. The chloroplast genome structure of the vascular plant Isoetes is similar to that of the liverwort Marchantia. American Fern Journal 90: 51-59.

133. Dulai, S., T. Pocs, S. Orban, E. Lehoczki & I. Molnar. 2000. Some photosynthetic characteristics of an indigenous (Cyathea glauca) and an introduced (Psidium cattleianum) plant species in Reunion Island. Plant Physiology & Biochemistry (Paris) 38(Supplement): s237. [Abstract]

134. Dutra, T. L. & D. J. Batten. 2000. Upper Cretaceous floras of King George Island, West Antarctica, and their palaeoenvironmental and phytogeographic implications. Cretaceous Research 21: 181-209.

135. Dyer, A. F., J. C. Parks & S. Lindsay. 2000. Historical review of the uncertain taxonomic status of Cystopteris dickieana R.Sim (Dickie's bladder fern). Edinburgh Journal of Botany 57: 71-81.

136. Edgin, B. & J. E. Ebinger. 2000. Vascular flora of the Red Hills State Park, Lawrence County, Illinois. Transactions of the Illinois State Academy of Science 94: 1-17.

137. Edgington, J. 2000. Aspleniaceae and Polypodiaceae in London. London Naturalist 79: 51-54.

138. Edwards, M. E., N. H. Bigelow, B. P. Finney & W. R. Eisner. 2000. Records of aquatic pollen and sediment properties as indicators of late-Quaternary Alaskan lake levels. Journal of Paleolimnology 24: 55-68.

139. Ennos, R. E. & E. Sheffield. 2000. Plant Life. Blackwell, Oxford.

140. Eyini, M. W., N. A. Devi, C. Pothiraj, J. Muthukrishnan & B. S. Kil. 2000. Differential responses of Azolla microphylla Kaulf and A. filiculoides Lam. to lead nitrate. Journal of Plant Biology 43: 18-21.

141. Falcon-Lang, H. J. 2000. Fire ecology of the Carboniferous tropical zone. Palaeogeography Palaeoclimatology Palaeoecology 164: 339-355.

142. Farrar, D. R. 2000. Evolution and speciation in Botrychium. American Journal of Botany 87 Suppl. 6: 89. [Abstract]

143. Farrar, D. R. 2000. Warren H. Wagner (1920-2000). Taxon 49: 585-592.

144. Farrar, D. R., C. L. Johnson-Groh & W. D. Hauk. 2000. Biology and conservation of the Ophioglossaceae A tribute to Warren "Herb" Wagner. American Journal of Botany 87 Suppl. 6: 89. [Abstract]

145. Farrar, D. R. & F. S. Wagner. 2000. An overview of the Ophioglossaceae. American Journal of Botany 87 Suppl. 6: 90. [Abstract]

146. Farrar, D. R. & J. E. Watkins Jr. 2000. Morphological differentiation through differential gene silencing in the allotetraploid derivatives of Botrychium lunaria x B. lanceolatum a partial confirmation of the hypothesis of Werth and Windham. American Journal of Botany 87 Suppl. 6: 94. [Abstract]

147. Felgenhauer, N., T. Zilker, F. Worek & P. Eyer. 2000. Intoxication with huperzine A, a potent anticholinesterase found in the fir club moss. Journal of Toxicology - Clinical Toxicology 38: 803-808. [Lycopodium clavatum, L. selago]

148. Fennane, M. & J. El Oualidi. 2000. Contributions to the vascular flora of Morocco (1-2). Acta Botanica Malacitana 25: 251-258. [French, Isoetes setacea]

149. Fernandes, I. 2000. Taxonomy of species representatives of Dicksoniaceae in Brazil. 50: 5-26. [Portuguese]

150. Fernandes, I. 2000. A new species of Cyathea (Cyatheaceae) in Brazil. Bradea 8: 193-196. [Portuguese]

151. Figueiredo, E. 2000. Fern collecting in S. Tome (Gulf of Guinea). Pteridologist 3: 117-122.

152. Flaspohler, D. J., S. A. Temple & R. N. Rosenfield. 2000. Relationship between nest success and concealment in two ground-nesting passerines. Journal of Field Ornithology 71: 736-747. [Lycopodium obscurum]

153. Ford, S. & M. Gibson. 2000. Lichens of the soft tree-fern Dicksonia antarctica Labill. in Victorian rainforests. Victorian Naturalist (South Yarra) 117: 172-179.

154. Fraser-Jenkins, C. R. 1997. Himalayan ferns (A guide to Polystichum). International Book Distributors, Dehra Dun, India. 54 pp. (with errata 10/1/1998).

155. Fraser-Jenkins, C. R. 1997. New species syndrome in Indian pteridology and the Ferns of Nepal. International Book Distributors, Dehra Dun, India. 403 pp.

156. Freitas, R. N., A. A. Prakash, M. Shahin & A. C. Povey. 2000. Differences between DNA adducts in BDFI mice treated with bracken fern extract or spores and the principal DNA adduct formed in vitro by ptaquiloside. Pp. 96-98. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

157. Freitas, R. N., M. E. Silva, P. J. O'Connor & A. C. Povey. 2000. 32P-postlabelling analysis of DNA adducts in tissues obtained from rats treated with bracken fern (Pteridium aquilinum subsp. caudatum) from Brazil. Pp. 132-135. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

158. Friedman, W. E. & M. E. Cook. 2000. The origin and early evolution of tracheids in vascular plants: Integration of palaeobotanical and neobotanical data. Philosophical Transactions of the Royal Society of London B Biological Sciences 355: 857-868. [Huperzia, Equisetum]

159. Galal, Y. G. M. & I. A. El-Ghandour. 2000. Biological nitrogen fixation, mycorrhizal infection and Azolla symbiosis in two rice cultivars in Egypt. Egyptian Journal of Microbiology 35: 445-461.

160. Galera, H. & B. Sudnik-Wojcikowska. 2000. The most interesting species in the flora of the Palace of Culture and Science in Warsaw. Fragmenta Floristica et Geobotanica Series Polonica 7: 117-128. [Polish& Asplenium ruta-muraria]

161. Galvez, J., F. Sanchez De Medina, J. A. Romero & A. Zarzuelo. 2000. Effect of Polypodium leucotomos on acute, chronic and reactivated trinitrobenzene sulphonic acid colitis in rats. Inflammopharmacology 8: 89-105.

162. Gama, A. & Y. Dumas. 2000. Vegetation cover changes after chemical control: an example. Pp. 180-183. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

163. Gandolfo, M. A., K. C. Nixon, W. L. Crepet & G. E. Ratcliffe. 2000. Sorophores of Lygodium Sw. (Schizaeaceae) from the Late Cretaceous of New Jersey. Plant Systematics & Evolution 221: 113-123.

164. Gao, W., Y. Li, S. Jiang & D. Zhu. 2000. Three Lycopodium alkaloid N-oxides from Huperzia serrata. Planta Medica 66: 664-667.

165. Gillingham, M. P., K. L. Parker & T. A. Hanley. 2000. Partial consumption of Shield Fern, Dryopteris dilatata, rhizomes by Black-tailed Deer, Odocoileus hemionus sitkensis, and its potential implications. Canadian Field-Naturalist 114: 21-25.

166. Gilman, A. V. 2000. Distinguishing Huperzia appalachiana from H. selago. Fiddlehead Forum 27: 6.

167. Gilman, A. V. 2000. Japanese beetles on ferns. Fiddlehead Forum 27: 35.

168. Giralt, M., M. R. Nogues, A. Alomar, N. Argany, C. G. Calvo & J. Mallol. 2000. Human oxidative stress during PUVA therapy protective effect of a Polypodium leucotomos extract. Methods & Findings in Experimental & Clinical Pharmacology 22: 496. [Abstract]

169. Glasspool, I. 2000. A major fire event recorded in the mesofossils and petrology of the Late Permian, Lower Whybrow coal seam, Sydney Basin, Australia. Palaeogeography Palaeoclimatology Palaeoecology 164: 357-380.

170. Goldblatt, P. & J. Manning. 2000. Strelitzia: Cape plants: A conspectus of the Cape flora of South Africa. National Botanical Institute, Pretoria, South Africa. 1-743. pp.

171. Golovneva, L. B. 2000. Relationship between diversity of Late Cretaceous floras of north-eastern Russia and climatic temperature parameters. Botanicheskii Zhurnal (St. Petersburg) 85: 124-133. [Russian]

172. Gonzalez, A., M. C. Alfayate Casanas, C. Garcia Farina, C. Leon Arencibia & J. Bermejo Barrera. 2000. Triterpenoids from Woodwardia radicans. Biochemical Systematics & Ecology 28: 497-499.

173. Gonzalez, S., M. V. Alcaraz, J. Cuevas, M. Perez, P. Jaen, M. Alvarez-Mon & V. G. Villarrubia. 2000. An extract of the fern Polypodium leucotomos (Difur(R)) modulates Th1/Th2 cytokines balance in vitro and appears to exhibit anti-angiogenic activities in vivo: Pathogenic relationships and therapeutic implications. Anticancer Research 20: 1567-1576.

174. Goolsby, J. A., P. W. Tipping, T. D. Center & F. Driver. 2000. Evidence of a new Cyrtobagous species (Coleoptera: Curculionidae) on Salvinia minima Baker in Florida. Southwestern Entomologist 25: 299-301.

175. Gorski, P. 2000. A contribution to the flora of the Tatra National Park. Fragmenta Floristica et Geobotanica Series Polonica 7: 345-347. [Polish& Diphasiastrum alpinum]

176. Goswami, H. K. & I. Bhu. 2000. Isoetes pantii is a natural hybrid: Isoetes sampathkumarini x I. coromandelina. Bionature 20: 9-18.

177. Goswami, H. K., S. I. Chang & I. H. Lee. 2000. Abrupt DNA methylation might have been responsible for origin of heterospory. Bionature 20: 1-7.

178. Gottlieb, J. E. 2000. Dryopteris filix-mas new in Pennsylvania. American Fern Journal 90: 144.

179. Grant, J. R. 2000. The genus Botrychium (Ophioglossaceae) in the interior of Alaska Herb Wagner's final conquest. American Journal of Botany 87 Suppl. 6: 94. [Abstract]

180. Grasso, S., A. Pane & S. O. Cacciola. 2000. First report of Armillaria mellea on a fern from Italy. Plant Disease 84: 592. [Cyrtomium falcatum]

181. Greer, G. K. & B. C. McCarthy. 2000. Patterns of growth and reproduction in a natural population of the fern Polystichum acrostichoides. American Fern Journal 90: 60-76.

182. Greuter, W., J. McNeill, F. R. Barrie, H. M. Burdet, V. Demoulin, T. S. Filgueiras, D. H. Nicolson, P. C. Silva, J. E. Skog, P. Trehane & N. J. Turland. 2000. International Code of Botanical Nomenclature. Koeltz Scientific Books, Konigstein, Germany.

183. Guenther, T., E. Burley, M. Peterman, L. VanGorden, D. Severson & T. Pauley. 2000. Salamander populations in the Allegheny National Forest: The role of bryophytes. Journal of the Pennsylvania Academy of Science 73: 158. [Abstract& Dennstaedtia punctilobula]

184. Guimaraes, J. R. D., M. Meili, L. D. Hylander, S. E. de Castro, M. Roulet, J. B. Narvaez Mauro & R. A. de Lemos. 2000. Mercury net methylation in five tropical flood plain regions of Brazil: High in the root zone of floating macrophyte mats but low in surface sediments and flooded soils. Science of the Total Environment 261: 99-107. [Salvinia rotundifolia]

185. Guleria, J. S. & R. Srivastava. 2000. Observations on the fossil fern Goniopteris prolifera Presl and its present status. Phytomorphology 50: 11-13.

186. Gupta, R. S., P. Kumar, A. Sharma, T. N. Bharadwaj & V. P. Dixit. 2000. Hypocholesterolemic activity of Marsilea minuta in gerbils. Fitoterapia 71: 113-117.

187. Gureyeva, I. I. 2000. About species of Athyrium filix-femina complex in South Siberia. Taxonomy Remarks on the Data of Krylov Herbarium 92: 4-10.

188. Hagemann, W. 2000. Der organismus als subjekt in der Evolution: die wiederkehr des offenen organismus in der Pflanzenevolution. Pp. 63-106. In P. Heusser (Ed.). Goethes Beitrag zur Erneuerung der Naturwissenschaften. Verlag Paul Haupt, Bern. [German]

189. Hagemann, W. 2000. The organism as subject in evolution: the recurrence of the open repens-type in plant evolution. Indian Fern Journal 17: 1-35.

190. Hata, K., Y. Iwahori, K. Hori, Y. Okada & T. Okuyama. 2000. Inhibitory effect of some wild plants in Akita on melanin biosynthesis. Natural Medicines 54: 144-147.

191. Haufler, C. H., T. Hildebrand, P. Hammond, J. P. Therrien & C. Walters. 2000. New insights concerning the origin of Polypodium scouleri and its ongoing hybridization with sympatric congeners. American Journal of Botany 87 Suppl. 6: 94. [Abstract]

192. Haufler, C. H., E. A. Hooper & J. P. Therrien. 2000. Modes and mechanisms of speciation in pteridophytes: Implications of contrasting patterns in ferns representing temperate and tropical habitats. Plant Species Biology 15: 223-236.

193. Hauk, W. D. 2000. Phylogeny of the Ophioglossaceae based on molecular and morphological characters. American Journal of Botany 87 Suppl. 6: 90. [Abstract]

194. Hawkings-Byass, N. 2000. The efficient execution of bracken control by helicopter. Pp. 175-179. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

195. Haynes, R. R. & C. C. Jacono. 2000. Status of Salvinia (Salviniaceae) in Alabama. Castanea 65: 225-227.

196. He, Z. R. 2000. A new species of Angiopteris from Guangxi. Acta Botanica Yunnanica 22: 399-400. [Chinese]

197. Hebenstreit, D., R. Klaus, E. Engel, G. Obermeyer & F. Ferreira. 2000. Cloning and characterization of Lil l 1, the Bet v 4 homologue from Lily pollen. Journal of Allergy & Clinical Immunology 105(1 part 2): S234. [Abstract& Dicranopteris curranii, D. linearis]

198. Hedge, S. & L. D'Souza. 2000. In vitro sporophyte production from rhizome of Drynaria quercifolia. Indian Fern Journal 17: 72-76.

199. Hemsley, A. R., M. E. Collinson, B. Vincent, P. C. Griffiths & P. Jenkins. 2000. Self-assembly of colloidal units in exine development. Pp. 31-44. In M. M. Harley, C. M. Morton & S. Blackmore (Eds.). Pollen and spores: morphology and biology. Royal Botanic Gardens, Kew.

200. Hickok, L. G. & T. R. Warne. 2000. Short-circuiting the fern life cycle: Apospory in Ceratopteris richardii. Pp. 397-405. In R. N. Trigiano & D. J. Gray (Eds.). Plant tissue culture concepts and laboratory exercises. CRC Press LLC, Boca Raton, Florida.

201. Hirai, R. Y. & J. Prado. 2000. Selaginellaceae Willk. in the state of Sao Paulo, Brazil. Revista Brasileira de Botanica 23: 313-339. [Portuguese]

202. Hirohara, M., M. Ono, Y. Arai, K. Masuda, K. Shiojima & H. Ageta. 2000. Fern constituents: Triterpenoids of Polypodiodes amoena. Natural Medicines 54: 186-189.

203. Hirohara, M., N. Takahisa, Y. Terayama, A. Kobayashi, Y. Arai, M. Kazuo, H. Hamashima, K. Shiojima & H. Ageta. 2000. Chemotaxonomy of ferns: Triterpenoids and rbcL gene sequences of Polypodium, Polypodiodes and Goniophlebium. Natural Medicines 54: 330-333.

204. Hoefferle, A. M. 2000. Impacts of aerial leaf removal on subsequent year reappearance and size of leaves of the daisy leaf moonwort (Botrychium matricariifolium) and the triangle moonwort (B. lanceolatum var. angustisegmentum). American Journal of Botany 87 Suppl. 6: 90. [Abstract]

205. Holland, M. M., C. J. Burk & D. McLain. 2000. Long-term vegetation dynamics of the lower strata of a western Massachusetts oxbow swamp forest. Rhodora 102: 154-174. [Onoclea sensibilis, Osmunda regalis]

206. Holloway, D. M. & L. G. Harrison. 2000. Computational development: Two examples in plant development - apical/basal cell differentiation in fern gametophytes& and linking concentration pattern to growth in three dimensions. Developmental Biology 222: 240. [Abstract]

207. Hong, S. G., J. J. Kim & H. T. Im. 2000. Studies on the shade tolerance of the woody and herbaceous plants for urban forest aromatic bath. Journal of Korean Forestry Society 89: 585-590. [Korean& Athyrium yokoscense]

208. Hoot, S. B., A. Buerkle, W. C. Taylor & N. T. Luebke. 2000. Genetic diversity, population structure, and phylogenetic patterns in Isoetes louisianensis, a critically endangered plant. Report to U. S. Fish and Wildlife Service:

209. Hoot, S. B., W. C. Taylor & E. Wagner. 2000. Species delimitation and hybrid origins in North American Isoetes based on LEAFY intron data. American Journal of Botany 87 Suppl. 6: 95. [Abstract]

210. Horrocks, J. R. 2000. Phegopteris decursive-pinnata. Hardy Fern Foundation Quarterly 10: 11-12.

211. Horrocks, J. R. 2000. Cheilanthes tomentosa. Hardy Fern Foundation Quarterly 10: 28-29.

212. Horrocks, M., Y. Deng, J. Ogden & D. G. Sutton. 2000. A reconstruction of the history of a Holocene sand dune on Great Barrier Island, northern New Zealand, using pollen and phytolith analyses. Journal of Biogeography 27: 1269-1277. [Pteridium]

213. Horsfield, D. 2000. Ditropis pteridis (Spinola) (Hem., Delphacidae) in Scotland. Entomologist's Monthly Magazine 136: 246. [Pteridium aquilinum]

214. Hou, X. & Z. R. Wang. 2000. A subspecific taxonomic study on Asplenium trichomanes L. from China. Acta Phytotx. Sin. 38: 242-255. [Chinese]

215. Houston, H. J. & T. A. Ranker. 2000. Population genetics of Sadleria cyatheoides (Blechnaceae) a Hawaiian endemic. American Journal of Botany 87 Suppl. 6: 95. [Abstract]

216. Hovenkamp, P. H. 2000. Paraselliguea, a new genus of Malesian Polypodiaceae, a correction. Blumea 45: 376.

217. Hrsak, V. 2000. Two fern taxa from the Polypodium vulgare L. complex: New for Croatia. Acta Botanica Croatica 59: 375-381.

218. Hrsak, V. 2000. Fern flora in the Smiljanova Graba valley at Maceljska Gora mountain (north-western Croatia). Natura Croatica 9: 195-202. [Dryopteris affinis, D. dilatata, Matteuccia struthiopteris, Polystichum braunii]

219. Hsu, T. W., S. J. Moore & T. Y. Chiang. 2000. Low RAPD polymorphism in Archangiopteris itoi, a rare and endemic fern in Taiwan. Botanical Bulletin of Academia Sinica (Taipei) 41: 15-18.

220. Huang, P., Y. m. Guan & X. Q. Yang. 2000. Early Jurassic palynoflora from a drilling section of Jurong, Jiangsu. Acta Micropalaeontologica Sinica 17: 85-98. [Chinese]

221. Huang, Y. M., S. S. Ying & W. L. Chiou. 2000. Morphology of gametophytes and young sporophytes of Sphaeropteris lepifera. American Fern Journal 90: 127-137.

222. Hudson, J. B., K. Anani, M. K. Lee, C. De Souza, J. T. Arnason & M. Gbeassor. 2000. Further investigations on the antiviral activities of medicinal plants of Togo. Pharmaceutical Biology 38: 46-50. [Davallia chaerophylloides]

223. Husak, S., M. Voege & C. Weilner. 2000. Isoetes echinospora and I. lacustris in the Bohemian forest lakes in comparison with other European sites. Silva Gabreta 4: 245-252.

224. Hutchinson, G. 2000. Some choice early records of Pteridophytes in Carmarthenshire. Botanical Society of the British Isles News 4: 61. [Abstract]

225. Iannuzzi, R. & O. Rosler. 2000. Floristic migration in South America during the Carboniferous: Phytogeographic and biostratigraphic implications. Palaeogeography Palaeoclimatology Palaeoecology 161: 71-94. [Lycopsida]

226. Imaizumi, T., T. Kanegae & M. Wada. 2000. Cryptochrome nucleocytoplasmic distribution and gene expression are regulated by light quality in the fern Adiantum capillus-veneris. Plant Cell 12: 81-95.

227. Imperato, F. 2000. Kaempferol and quercetin 3-O-(X",X"-di-protocatechuoyl)-glucuronides from Pteris vittata. American Fern Journal 90: 141-143.

228. Imperato, F. & A. Telesca. 2000. 6-C-beta-Cellobiosylisoscutellarein-8-methyl ether, a new flavonoid from Pteris vittata. American Fern Journal 90: 42-45.

229. Inatomi, Y., A. Inada, H. Murata, M. Nishi & T. Nakanishi. 2000. Constituents of a fern, Diplazium subsinuatum. III. Four new hopane-triterpene lactone glycosides. Chemical & Pharmaceutical Bulletin (Tokyo) 48: 1930-1934.

230. Inoue, H., H. Kamachi, D. Yamaya, M. Oguma & M. Noguchi. 2000. Characterization of a protease that acts specifically on the 22-kDa protein in thylakoid membranes from green spores of the fern Osmunda japonica. Physiologia Plantarum 109: 129-136.

231. Irudayaraj, V. & A. Ganapathi. 2000. Rediscovery of a rare and endangered fern Elaphoglossum commutatum (Mett.) Alderw. (Lomariopsidaceae: Pteridophyta). Journal of Economic & Taxonomic Botany 24: 254-256.

232. Ito, H., T. Muranaka, K. Mori, Z. X. Jin, H. Tokuda, H. Nishino & T. Yoshida. 2000. Ichthyotoxic phloroglucinol derivatives from Dryopteris fragrans and their anti-tumor promoting activity. Chemical & Pharmaceutical Bulletin (Tokyo) 48: 1190-1195.

233. Iturriaga, G., D. F. Gaff & R. Zentella. 2000. New desiccation-tolerant plants, including a grass, in the central highlands of Mexico, accumulate trehalose. Australian Journal of Botany 48: 153-158. [Cheilanthes bonariensis, C. integerrima, C. myriophylla, Pellaea sagittata, Selaginella]

234. Ivanova, N. S. 2000. Methods to classification of mountain forests in the Southern Urals. Lesovedenie 4: 16-21. [Russian& Lycopodium]

235. Iwashina, T., J. A. Lopez-Saez, A. Herrero, J. Kitajima & S. Matsumoto. 2000. Flavonol glycosides from Asplenium foreziense and its five related taxa and A. incisum. Biochemical Systematics & Ecology 28: 665-671.

236. Jaman, R., A. Damanhuri & A. Latiff. 2000. A provisional account and checklist of ferns and fern allies in the Belum Forest Reserve, Perak, Peninsular Malaysia. Malayan Nature Journal 54: 195-209.

237. Jaramillo, C. & G. Bayona. 2000. Mangrove distribution during the Holocene in Tribuga Gulf, Colombia. Biotropica 32: 14-22. [Acrostichum aureum]

238. Jenkins, M. A. & G. R. Parker. 2000. The response of herbaceous-layer vegetation to anthropogenic disturbance in intermittent stream bottomland forests of southern Indiana, USA. Plant Ecology 151: 223-237. [Lycopodium complanatum]

239. Jensen, A. S. & J. Holman. 2000. Macrosiphum on ferns: Taxonomy, biology and evolution, including the description of three new species (Hemiptera: Aphididae). Systematic Entomology 25: 339-372.

240. Jerome, C. 2000. New observations on the presence of Asplenium obovatum Viv. subsp. lanceolatum (Fiori) Pinto da Silva in the sandstone areas of the Vosges. Bauhinia 14: 89-91. [German]

241. Jetter, R. & M. Riederer. 2000. Composition of cuticular waxes on Osmunda regalis fronds. Journal of Chemical Ecology 26: 399-412.

242. Jiao, Y. & S. J. Wang. 2000. The leaf epidermal structures of three species of Botrychiaceae from China. Chinese Bulletin of Botany 17: 352-359.

243. Jiao, Y. & S. J. Wang. 2000. Introduction and Cultivation of Ferns of Kunming. Chinese Wild Plant Resources 19: 52-54.

244. Johns, R. J. 2000. Spore ornamentation and the species of simple-fronded Asplenium (Aspleniaceae) in West Africa. Pp. 133-146. In M. M. Harley, C. M. Morton & S. Blackmore (Eds.). Pollen and spores: morphology and biology. Royal Botanic Gardens, Kew.

245. Johnson, G. N., F. J. Rumsey, A. D. Headley & E. Sheffield. 2000. Adaptations to extreme low light in the fern Trichomanes speciosum. New Phytologist 148: 423-431.

246. Johnson-Groh, C. L. 2000. Population dynamics of Botrychium. American Journal of Botany 87 Suppl. 6: 91. [Abstract]

247. Johnson-Groh, C. L., L. Schoessler, C. Riedel & K. Skogen. 2000. Underground distribution and abundance of Botrychium gametophytes and juvenile sporophytes. American Journal of Botany 87 Suppl. 6: 90. [Abstract]

248. Jones, V. P., P. Anderson-Wong, P. A. Follett, P. Yang, D. M. Westcot, J. S. Hu & D. E. Ullman. 2000. Feeding damage of the introduced leafhopper Sophonia rufofascia (Homoptera: Cicadellidae) to plants in forests and watersheds of the Hawaiian Islands. Environmental Entomology 29: 171-180. [Cibotium splendens, Dicranopteris linearis]

249. Josephrajkumar, A., B. Subrahmanyam & C. Devakumar. 2000. Growth-regulatory activity of silver fern extract on the cotton bollworm, Helicoverpa armigera (Hubner). Insect Science & its Application 20: 295-302. [Cheilanthes farinosa]

250. Jurina, A. L. & O. N. Putjatina. 2000. A revision of the genus Flabellofolium and its first finds in the Givetian of Central Kazakhstan. Paleontologicheskii Zhurnal 3: 103-110. [Russian]

251. Kahlert, E. & L. Rueffle. 2000. The botanic position of Haliserites reichii Sternberg (Dipteridaceae). Feddes Repertorium 111: 427-431. [German]

252. Kar, P. P., S. Mishra & D. P. Singh. 2000. Variability in Azolla sporulation in response to phosphorus application. Biology & Fertility of Soils 32: 458-462.

253. Keary, I. P., C. Thomas & E. Sheffield. 2000. The effects of the herbicide asulam on the gametophytes of Pteridium aquilinum, Cryptogramma crispa and Dryopteris filix-mas. Annals of Botany (London) 85(Suppl. B): 47-51.

254. Keary, I. P., C. Thomas & E. Sheffield. 2000. The effects of the herbicide asulam on the gametophytes of Pteridium aquilinum, Cryptogramma crispa and Dryopteris filix-mas. P. 186. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract]

255. Keiper, F. J. & R. McConchie. 2000. An analysis of genetic variation in natural populations of Sticherus flabellatus (R. Br. (St John)) using amplified fragment length polymorphism (AFLP) markers. Molecular Ecology 9: 571-581.

256. Kelmanson, J. E., A. K. Jager & J. van Staden. 2000. Zulu medicinal plants with antibacterial activity. Journal of Ethnopharmacology 69: 241-246. [Cheilanthes viridis]

257. Kenrick, P. 2000. The relationships of vascular plants. Philosophical Transactions of the Royal Society of London B Biological Sciences 355: 847-855.

258. Kentner, E. K. & M. R. Mesler. 2000. Evidence for natural selection in a fern hybrid zone. American Journal of Botany 87: 1168-1174. [Polystichum imbricans, Polystichum munitum]

259. Kessenich, T. A. 2000. Dryopteris marginalis 'Pleasant Valley' a new cultivar from southwestern Wisconsin. Fiddlehead Forum 27: 17, 20.

260. Kessler, M. 2000. Altitudinal zonation of Andean cryptogam communities. Journal of Biogeography 27: 275-282.

261. Kessler, M. 2000. Elevational gradients in species richness and endemism of selected plant groups in the central Bolivian Andes. Plant Ecology 149: 181-193.

262. Kessler, M., K. Bach, N. Helme, S. G. Beck & J. Gonzales. 2000. Floristic diversity of Andean dry forests in Bolivia an overview. Pp. 219-234. In S. W. Breckle, B. Schweizer & U. Arndt (Eds.). Ergebnisse weltweiter oekologischer Forschung. Bietrage des 1. Symposiums der A. F. W. Schimper-Striftung von H. und E. Walter, Hohenheim, Oktober 1998. Guenter Heimbach Verlag, Stuttgart.

263. Kessler, M., T. Kroemer & I. Jimenez. 2000. Inventario de grupos selectos de plantas en el Valle de Masicuri (Santa Cruz, Bolivia). Revista Boliviana de Ecologia y Conservacion Ambiental 8: 3-15. [Spanish]

264. Khrapko, O. V. 2000. Evolutionary links of far eastern ferns of genus Dryopteris Adans. Biodiversity and dynamics of ecosystems in north Eurasia, Vol. 2. Section "Diversity of the flora and vegetation of north Eurasia" Novosibirsk, Russia: 113-115.

265. Khrapko, O. V. & N. M. Stetsenko. 2000. Rare fern species in expositions of Vladivostok and Kiev botanical gardens, Plants in nature and culture. Proceedings of the botanical gardens of the far eastern branch of the Russian Academy of Sciences 2: 189-196.

266. Khullar, S. P. with C. R. Fraser-Jenkins. 2000. An illustrated fern flora of the west Himalaya: volume 2. International Book Distributors, Dehra Hun. 544 pp.

267. Kim, J. H., H. T. Cho & H. Kende. 2000. alpha-Expansins in the semiaquatic ferns Marsilea quadrifolia and Regnellidium diphyllum: Evolutionary aspects and physiological role in rachis elongation. Planta (Berlin) 212: 85-92.

268. Kirn, H. S. 2000. Pteridophytic flora of Poonch district of Jammu and Kashmir state, northwest Himalayas. Indian Fern Journal 17: 92-105.

269. Kleszczynska, H., K. Bielecki, J. Sarapuk, A. Dziamska & S. Przestalski. 2000. Influence of triphenyllead chloride on biological and model membranes. Zeitschrift fur Naturforschung C-A Journal of Biosciences 55: 764-769. [Salvinia natans]

270. Klink, V. P. & S. M. Wolniak. 2000. The efficacy of RNAi in the study of the plant cytoskeleton. Journal of Plant Growth Regulation 19: 371-384. [Marsilea vestita]

271. Kobayashi, J., Y. Hirasawa, N. Yoshida & M. Hiroshi. 2000. Complanadine A, a new dimeric alkaloid from Lycopodium complanatum. Tetrahedron Letters 41: 9069-9073.

272. Kofler, H., W. Hemmer, M. Focke & R. Jarisch. 2000. Fern allergy. Allergy (Copenhagen) 55: 299-300.

273. Kofler, H., W. Hemmer, M. Focke & R. Jarisch. 2000. Fern allergy. Journal of Allergy & Clinical Immunology 105: S237. [Abstract]

274. Konde, V. B. & S. Kannaiyan. 2000. Azolla-Anabaena symbiosis: Establishment of true symbiotic nature as detected by 15N studies. Journal of Maharashtra Agricultural Universities 25: 184-187.

275. Konde, V. B. & S. Kannaiyan. 2000. Identification of Azolla hybrid using protein and isozyme markers. Journal of Maharashtra Agricultural Universities 25: 188-191.

276. Korall, P. & P. Kenrick. 2000. Phylogeny of Selaginellaceae based on the plastid gene rbcL: congruence and incongruence with morphology. American Journal of Botany 87 Suppl. 6: 95. [Abstract]

277. Kornas, J., A. Medwecka-Kornas, F. Malaisse & M. Matyjaszkiewicz. 2000. Pteridophytes of upper Katanga (Democratic Republic of Congo). Prace Botaniczne Instytut Botaniki Uniwersytetu Jagiellonskiego 35: 7-181.

278. Kotyk, M. E. & J. F. Basinger. 2000. The Early Devonian (Pragian) zosterophyll Bathurstia denticulata Hueber. Canadian Journal of Botany 78: 193-207.

279. Krassilov, V. & F. Bacchia. 2000. Cenomanian florule of Nammoura, Lebanon. Cretaceous Research 21: 785-799. [Nammouria gracilis, Pteris]

280. Krings, M. 2000. Remains of secretory cavities in pinnules of Stephanian pteridosperms from Blanzy-Montceau (Central France): A comparative study. Botanical Journal of the Linnean Society 132: 369-383. [Pseudomariopteris paleaui, P. ribeyronii]

281. Kudrjashova, G. L. 2000. A synopsis of the Caucasian Polypodiophyta species. Botanicheskii Zhurnal (St. Petersburg) 85: 144-164. [Russian]

282. Kuehnelt, D., J. Lintschinger & W. Goessler. 2000. Arsenic compounds in terrestrial organisms. IV. Green plants and lichens from an old arsenic smelter site in Austria. Applied Organometallic Chemistry 14: 411-420. [Dryopteris dilatata, Equisetum pratense, Asplenium viridae]

283. Kuzemko, A. A. 2000. Vegetative cover of the lower Ros river valley and the ways of its conservation. Ukrayins'Kyi Botanichnyi Zhurnal 57: 523-533. [Ukrainian, Salvinia natans]

284. Kvacek, J. & D. L. Dilcher. 2000. Comparison of Cenomanian floras from western interior North America and Central Europe. Acta Universitatis Carolinae Geologica 44: 17-38. [Gleicheniaceae, Schizeaceae]

285. Labiak, P. H. 2000. Notes on Lellingeria oreophila (Grammitidaceae), a poorly known species from Colombia. American Fern Journal 90: 138-140.

286. Labiak, P. H. 2000. New species and new combinations in neotropical Grammitidaceae (Pteridophyta). Brittonia 52: 246-255.

287. Ladha, J. K., D. Dawe, T. S. Ventura, U. Singh, W. Ventura & I. Watanabe. 2000. Long-term effects of urea and green manure on rice yields and nitrogen balance. Soil Science Society of America Journal 64: 1993-2001. [Azolla microphylla]

288. Landergott, U., J. J. Schneller, R. Holderegger & G. Kozlowski. 2000. Population history of the rare fern species Dryopteris cristata in Switzerland. Botanica Helvetica 110: 151-170. [German]

289. Lanzalunga, O. & M. Bietti. 2000. Photo- and radiation chemical induced degradation of lignin model compounds. Journal of Photochemistry & Photobiology. B - Biology 56: 85-108. [Adiantum]

290. Larson, D. W., U. Matthes, J. A. Gerrath, N. W. K. Larson, J. M. Gerrath, J. C. Nekola, G. L. Walker, S. Porembski & A. Charlton. 2000. Evidence for the widespread occurrence of ancient forests on cliffs. Journal of Biogeography 27: 319-331. [Asplenium, Cystopteris, Polypodium]

291. Le Duc, M. G., R. J. Pakeman & R. H. Marrs. 2000. Vegetation development on upland and marginal land treated with herbicide, for bracken (Pteridium aquilinum) control, in Great Britain. Journal of Environmental Management 58: 147-160.

292. Le Duc, M. G., R. J. Pakeman, P. D. Putwain & R. H. Marrs. 2000. The variable responses of bracken fronds to control treatments in Great Britain. Annals of Botany (London) 85(Suppl. B): 17-29. [Pteridium aquilinum]

293. Le Duc, M. G., R. J. Pakeman, P. D. Putwain & R. H. Marrs. 2000. The variable responses of bracken fronds to control treatments in Great Britain. P. 184. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract& Pteridium aquilinum]

294. Leao Barros, I. C., M. R. Pietrobom-Silva, G. Sidney Baracho, J. Alves De Siqueira, V. Gomes Dos Santos & A. Matos Moura. 2000. Contribution to the study of pteridophytes of the Serra do Urubu, Maraial municipality, Pernambuco state, Northeastern Brazil (Marattiaceae-Vittariaceae). Anales del Jardin Botanico de Madrid 58: 303-310.

295. Lee, Y. G. & H. J. Cho. 2000. Phytosociological classification and its ecological characteristics of Pinus sylvestris plantations in Eifel, Germany. Journal of Korean Forestry Society 89: 378-383. [Korean, Pteridium aquilinum]

296. Lejeune, A., J. Peng, E. Le Boulenge, Y. Larondelle & C. Van Hove. 2000. Carotene content of Azolla and its variations during drying and storage treatments. Animal Feed Science & Technology 84: 295-301.

297. Lellinger, D. B. 2000. On the lectotypification of Danaea elliptica. American Fern Journal 90: 100-103.

298. Lellinger, D. B. 2000. Prof. Warren Herbert Wagner, Jr. 1920-2000. Bulletin of the British Pteridological Society 5: 278-279. 299. Li, C. S., F. M. Hueber & C. L. Hotton. 2000. A neotype for Drepanophycus spinaeformis Goppert 1852. Canadian Journal of Botany 78: 889-902.

300. Li, R., X. Yan & D. Zhang. 2000. Vessels in roots and rhizomes of Dryopteris crassirhizoma (Dryopteridaceae) from Heilongjiang province, China. American Fern Journal 90: 24-31.

301. Li, X., P. F. Dunn & R. M. Brach. 2000. Lycopodium spore impacts onto surfaces. Atmospheric Environment 34: 1575-1581.

302. Lin, L. C. & C. J. Chou. 2000. Three new biflavonoids from Selaginella delicatula. Chinese Pharmaceutical Journal (Taipei) 52: 211-218.

303. Liu, Y. C., C. M. Kuo & H. Y. Liu. 2000. SEM studies on spore in Taiwanese fern genera I. Athyrioids. Taiwania 45: 181-200.

304. Liu, Z. H., C. S. Li & J. Hilton. 2000. Zhutheca Liu, Li et Hilton gen. nov., the fertile pinnules of Fascipteris densata Gu et Zhi and their significance in marattialean evolution. Review of Palaeobotany & Palynology 109: 149-160.

305. Loban, L. O. 2000. The forest vegetation of the river Uday's basin in its upper current. Ukrayins'Kyi Botanichnyi Zhurnal 57: 386-392. [Ukranian, Lycopodium annotinum]

306. Loof Pieter, A. A. & A. Zullini. 2000. A new species of the genus Thalassogenus Andrassy, 1973 and the systematic position of the genus (Nematoda: Oncholaimina). Annales Zoologici (Warsaw) 50: 263-266. [Selaginella]

307. Lubienski, M. 2000. Equisetum x font-queri Rothm. (E. palustre L. x E. telmateia Ehrh.) (Equisetaceae: Pteridophyta) in Ireland. Fern Gaz. (UK) 16: 143-145.

308. Lubienski, M. S., G. Jessen, Levermann & H. W. Bennert. 2000. Equisetum x font-queri Rothm. (= E. palustre L. x E. telmateia Ehrh., Equisetaceae, Pteridophyta) auf Ruegen, ein Erstfun fuer Deutschland un Mitteleuropa. Gleditschia 28: 65-79. [German]

309. Lugardon, B., L. Grauvogel-Stamm & I. Dobruskina. 2000. Comparative ultrastructure of the megaspores of the Triassic lycopsid Pleuromeia rossica Neuburg. Comptes Rendus de L'Academie des Sciences Serie II Sciences de la Terre et des Planetes 330: 501-508.

310. Lujan, M. C., G. E. Barboza, S. Weler de Serra & L. Ariza Espinar. 2000. Quality control in two medicinal ferns and its local market insertion. Studia Botanica 9: 75-94. [Spanish& Anemia tomentosa var. australis, Huperzia saururus]

311. Lupia, R., H. Schneider, G. M. Moeser, K. M. Pryer & P. R. Crane. 2000. Marsileaceae sporocarps and spores from the Late Cretaceous of Georgia, U.S.A. International Journal of Plant Sciences 161: 975-988.

312. MacEachern, J. A. & J. A. Burton. 2000. Firmground Zoophycos in the Lower Cretaceous Viking Formation, Alberta: A distal expression of the Glossifungites ichnofacies. Palaios 15: 387-398.

313. Mahmoud, M. S. 2000. Plio-Pleistocene palynology (freshwater algae, spores and pollen) and palaeoecology of the shallow subsurface section, West Assiut, Egypt. Acta Universitatis Carolinae Geologica 44: 101-114.

314. Mahony, T. M. & J. D. Stuart. 2000. Old-growth forest associations in the northern range of coastal redwood. Madrono 47: 53-60. [Polystichum munitum]

315. Mai, D. H. 2000. The Middle and Upper Miocene floras of the Meuro and Rauno sequences in the Lusatica region. Part I: Waterferns, conifers, and monocotyledons. Palaeontographica Abteilung B Palaeophytologie 256: 1-68. [German]

316. Mantle, D., A. T. Pickering & E. K. Perry. 2000. Medicinal plant extracts for the treatment of dementia: A review of their pharmacology, efficacy and tolerability. Cns Drugs 13: 201-213. [Huperzia serrata]

317. Marliere, C. A., P. Wathern, S. N. Freitas, M. C. F. M. Castro & M. A. M. Galvao. 2000. Bracken fern (Pteridium aquilinum) consumption and oesophageal and stomach cancer in the Ouro Preto region, Minas Gerais, Brazil. Pp. 144-149. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

318. Marriott, H., J. Conn & H. Conn. 2000. Asplenium x alternifolium in the Black Hills of South Dakota. American Fern Journal 90: 109-110.

319. Marrs, R. H. & M. G. Le Duc. 2000. Factors controlling vegetation change in long-term experiments designed to restore heathland in Breckland, UK. Applied Vegetation Science 3: 135-146. [Pteridium aquilinum]

320. Marrs, R. H., M. G. Le Duc, R. J. Mitchell, D. Goddard, S. Paterson & R. J. Pakeman. 2000. The ecology of bracken: Its role in succession and implications for control. Annals of Botany 85(Suppl. B): 3-15. [Pteridium aquilinum]

321. Marrs, R. H., M. G. Le Duc, R. J. Mitchell, D. Goddard, S. Patterson & R. J. Pakeman. 2000. The ecology of bracken: its role in succession and implications for control. P. 184. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract& Pteridium aquilinum]

322. Maslenkova, L. T. & P. H. Homann. 2000. Stabilized S2 state in leaves of the desiccation tolerant resurrection fern Polypodium polypodioides. Dokladi na B"Lgarskata Akademiya na Naukite 53: 99-102.

323. Maslenkova, L. T., Y. Zanev & P. H. Homann. 2000. Comparative study of Photosystem II reactions in chloroplasts from desiccation-tolerant ferns Polypodium polypodioides and P. virginianum and desiccation-sensitive spinach plants by thermoluminescence and oxygen evolution. Dokladi na B"Lgarskata Akademiya na Naukite 53: 81-86.

324. Matula, C. F. 2000. Conservation status of Botrychium on the Upper Great Lakes. American Journal of Botany 87 Suppl. 6: 91. [Abstract]

325. May, T. 2000. Response of the vegetation in a "calimetal" of Dicranopteris pectinata after a fire in the eastern part of the Cordillera Central, Dominican Republic. Moscosoa 11: 113-132. [Spanish& Pteridium aquilinum]

326. May, T. & B. Peguero. 2000. Vegetation and flora of the ridge of Mogote, Jarabacoa, Cordillera Central, Dominican Republic. Moscosoa 11: 11-37. [Spanish]

327. McClatchey, W., R. Thaman & S. Vodonaivalu. 2000. A preliminary checklist of the flora of Rotuma with Rotuman names. Pacific Science 54: 345-363.

328. McGlone, M. S. & C. D. Meurk. 2000. Modern pollen rain, subantarctic Campbell Island, New Zealand. New Zealand Journal of Ecology 24: 181-194. [Blechnum, Polystichum vestitum]

329. McLoughlin, S., A. M. P. Tosolini & A. N. Drinnan. 2000. Revision of an Early Cretaceous macroflora from the Maryborough Formation, Maryborough Basin, Queensland, Australia. Memoirs of the Queensland Museum 45: 483-503.

330. McMaster, R. T. & N. D. McMaster. 2000. Vascular flora of beaver wetlands in western Massachusetts. Rhodora 102: 175-197. [Ophioglossum vulgatum var. pseudopodum]

331. Medina, V. F., S. L. Larson, A. E. Bergstedt & S. C. McCutcheon. 2000. Phyto-removal of trinitrotoluene from water with batch kinetic studies. Water Research 34: 2713-2722. [Salviniaceae]

332. Mehltreter, K., J. G. Garcia-Franco & A. Flores-Palacios. 2000. Microhabitat preferences of trunk epiphytes in a cloud forest of Mexico, with special reference to ferns. American Journal of Botany 87 Suppl. 6: 99. [Abstract]

333. Mehltreter, K. & M. Palacios-Rios. 2000. Phenological studies on Acrostichum danaeifolium Langsd. et Fisch. (Pteridaceae, Pteridophyta) on a Caribbean mangrove site of Mexico. American Journal of Botany 87 Suppl. 6: 95. [Abstract]

334. Mejia, M., R. Garcia & F. Jimenez. 2000. The phytogeographical subregion of Barbacoa-Casabito: Floristic diversity and its importance in the conservation of the flora of the Island of Hispaniola. Moscosoa 11: 57-106. [Spanish]

335. Melchor, R. N. & R. Herbst. 2000. Sedimentology of the El Puquen Formation (Upper Triassic, central Chile) and the new plant Mollesia melendeziae gen. et sp. nov. (Pteridophylla, incertae sedis). Ameghiniana 37: 477-485.

336. Melear, C., J. D. Goodlaxson, T. R. Warne & L. G. Hickok. 2000. Teaching preservice science teachers how to do science: Responses to research experience. J. Science Teacher Education 11: 1-14.

337. Meyer-Berthaud, B. 2000. Earliest trees: The Archaeopteris model. Journal de la Societe de Biologie 194: 65-70. [French]

338. Mickel, J. T. & A. R. Smith. 2000. Three new pteridophytes from Mexico. Brittonia 52: 234-237.

339. Misra, V., S. D. Pandey & P. N. Viswanathan. 2000. Effect of humic acid on the bioavailability of gamma-hexachlorocyclohexane in Marsilea minuta (L.). Environmental Monitoring & Assessment 61: 229-235.

340. Mitchell, R. J., M. H. D. Auld, J. M. Hughes & R. H. Marrs. 2000. Estimates of nutrient removal during heathland restoration on successional sites in Dorset, southern England. Biological Conservation 95: 233-246. [Pteridium aquilinum]

341. Mitra, S. & A. K. Sarkar. 2000. Comments on the typification of Athyrium x keralensis (Athyriaceae). Journal of Economic & Taxonomic Botany 24: 260.

342. Mitsuyasu, H. 2000. Origin and evolution of floral homeotic genes in green plants. Journal of Reproduction & Development 46(Supplement): 33-34. [Abstract& Ceratopteris richardii]

343. Miyamoto, F. 2000. Pteridophyte. Pp. 11-25. In H. Ohba (Ed.). The Flora of Hinku and Hunku Valleys, East Nepal. The University Museum, the University of Tokyo, Nature and Culture No 6, Tokyo.

344. Montgomery, J. D. 2000. Conservation status of the Ophioglossaceae in the Northeast. American Journal of Botany 87 Suppl. 6: 91. [Abstract] 345. Montgomery, J. D. 2000. Equisetaceae, Selaginellaceae. In A. F. Rhoads & T. A. Block (Eds.). The Plants of Pennsylvania. University of Pennsylvania Press, Philadelphia.

346. Moran, R. C. 2000. Monograph of the neotropical species of Lomariopsis (Lomariopsidaceae). Brittonia 52: 55-111.

347. Moran, R. C. 2000. Trichomanes resinosum (Hymenophyllaceae), a new species from southern Venezuela and adjacent Guyana. Brittonia 52: 238-240.

348. Moran, R. C. 2000. Ferns of the Lost World. Fiddlehead Forum 27: 1, 4-5. [Hymenophyllopsis, Pterozonium]

349. Moran, R. C. 2000. A horsetails' tale. Fiddlehead Forum 27: 25, 29-30. [Equisetum]

350. Morini, S. 2000. In vitro culture of Osmunda regalis fern. The Journal of Horticultural Science & Biotechnology 75: 31-34.

351. Muccifora, S., S. L. Woo & P. Gori. 2000. Ultrastructural features of spermatocytes and spermatozoids in the fern Phyllitis scolopendrium (L.) Newm. subsp. scolopendrium. Sexual Plant Reproduction 12: 323-331.

352. Mueller-Dombois, D. 2000. Rain forest establishment and succession in the Hawaiian Islands. Landscape & Urban Planning 51: 147-157. [Dicranopteris linearis]

353. Muller, S. 2000. Assessing occurrence and habitat of Ophioglossum vulgatum L. and other Ophioglossaceae in European forests. Significance for nature conservation. Biodiversity & Conservation 9: 673-681.

354. Mundy, N. I. 2000. New pteridophyte records from Gabon, West Africa, with a preliminary species list for Haut-Ogooue province. Fern Gazette 16: 125-142.

355. Murad, W., R. Habib-Ur & M. S. Khan. 2000. Common ferns and fern allies of Swat. Scientific Khyber 13: 23-32.

356. Murata, T. 2000. Preprophase band in fern protonemata: Mechanism of development and comparison with flowering plants. Journal of Plant Research 113: 111-118. [Adiantum capillus-veneris]

357. Murata, T. & M. Sugai. 2000. Photoregulation of asymmetric cell division followed by rhizoid development in the fern Ceratopteris prothalli. Plant & Cell Physiology 41: 1313-1320.

358. Murillo-Pulido, M. T. 2000. Helechos. In J. O. Rangel (Ed.). Colombia Diversidad Biota 3. Insituto de Ciencias Naturales & Instituteo Alexander von Humbolt, [Spanish]

359. Musonda, C. M. & J. K. Chipman. 2000. Carcinegenic and anti-carcinogenic potential of quercetin. Pp. 106-113. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

360. Muthukumar, T. & K. Udaiyan. 2000. Vesicular arbuscular mycorrhizae in pteridophytes of Western Ghats, Southern India. Phytomorphology 50: 132-142.

361. Nampy, S. 2000. Bolbitis thommankuthiana (Lomariopsidaceae), a new species of fern from India. Sida Contributions to Botany 19: 133-135.

362. Navarrete, H. & B. Oellgaard. 2000. The fern genus Dennstaedtia (Dennstaedtiaceae) in Ecuador, - new characters, new species and a new combination. Nordic Journal of Botany 20: 319-346.

363. Nichols, P. B., J. D. Couch & S. H. Al-Hamdani. 2000. Selected physiological responses of Salvinia minima to different chromium concentrations. Aquatic Botany 68: 313-319.

364. Nickrent, D. L., C. L. Parkinson, J. D. Palmer & R. J. Duff. 2000. Multigene phylogeny of land plants with special reference to bryophytes and the earliest land plants. Molecular Biology & Evolution 17: 1885-1895. [Equisetum, Psilotum]

365. Notis, C. 2000. Sperm longevity and swimming distance in ferns. American Journal of Botany 87 Suppl. 6: 96. [Abstract]

366. Notov, A. A. & N. V. Shubinskaya. 2000. Floristic records in western part of Tver' Province. 105: 59-60. [Russian& Cystopteris sudetica, Diphasiastrum tristachyum]

367. Nozue, K., J. Christie, T. Kiyosue, W. R. Briggs & M. Wada. 2000. Isolation and characterization of fern phototropism (Accession NO. AB037188). A putative blue-light photoreceptor for phototropism (PGR00-039). Plant Physiol 122: 1457.

368. Ocheretina, O., I. Haferkamp, H. Tellioglu & R. Scheibe. 2000. Light-modulated NADP-malate dehydrogenases from mossfern and green algae: Insights into evolution of the enzyme's regulation. Gene (Amsterdam) 258: 147-154. [Selaginella]

369. Ociepa, A. M. 2000. A new locality of Phyllitis scolopendrium (Polypodiaceae) in the Polish Carpathians. Fragmenta Floristica et Geobotanica Series Polonica 7: 376-378. [Polish]

370. Ogren, E. 2000. Maintenance respiration correlates with sugar but not nitrogen concentration in dormant plants. Physiologia Plantarum 108: 295-299. [Lycopodium annotinum]

371. Ojeda, F., T. Maranon & J. Arroyo. 2000. Plant diversity patterns in the Aljibe Mountains (S. Spain): A comprehensive account. Biodiversity & Conservation 9: 1323-1343.

372. Oliver, M. J., Z. Tuba & B. D. Mishler. 2000. The evolution of vegetative desiccation tolerance in land plants. Plant Ecology 151: 85-100.

373. Onaindia, M. & I. Amezaga. 2000. Seasonal variation in the seed banks of native woodland and coniferous plantations in Northern Spain. Forest Ecology & Management 126: 163-172. [Blechnum spicant]

374. Otani, I., N. Yamamoto & S. Entsu. 2000. Improvement of a brackenfern (Pteridium aquilinum L.) dominated pasture to Zoysia japonica Steud. Vegetation by asulam application or cutting. 46: 296-298. [Japanese]

375. Otero, R., V. Nunez, S. L. Jimenez, R. Fonnegra, R. G. Osorio, M. E. Garcia & A. Diaz. 2000. Snakebites and ethnobotany in the northwest region of Colombia: Part II: Neutralization of lethal and enzymatic effects of Bothrops atrox venom. Journal of Ethnopharmacology 71: 505-511. [Pleopeltis percussa, Trichomanes elegans]

376. Otsuka, K. 2000. Host utilization by a sawfly Strongylogaster osmundae (Hymenoptera: Tenthredinidae) on osmund fern Osmunda japonica. Memoirs of the Faculty of Science Kyoto University Series of Biology 17: 11-23.

377. Otto, S. P. & J. Whitton. 2000. Polyploid incidence and evolution. Pp. 401-437. In A. Campbell, W. W. Anderson & E. W. Jones (Eds.). Annual Review of Genetics Volume 34. 378. Owen, K. M. & R. H. Marrs. 2000. Acidifying arable soils for the restoration of acid grasslands. Applied Vegetation Science 3: 105-116. [Pteridium aquilinum]

379. Ozaki, T., S. Enomoto, Y. Minai, S. Ambe, F. Ambe & Y. Makide. 2000. Beneficial effect of rare earth elements on the growth of Dryopteris erythrosora. Journal of Plant Physiology 156: 330-334.

380. Ozaki, T., S. Enomoto, Y. Minai, S. Ambe & Y. Makide. 2000. A survey of trace elements in pteridophytes. Biological Trace Element Research 74: 259-273.

381. Pajeviae, S., M. Vuekoviae, A. Stankoviae, B. Krstiae, A. Kevresan & S. Raduloviae. 2000. The content of some macro-nutrients and heavy metals in dominant aquatic macrophytes of three ecosystems. Plant Physiology & Biochemistry (Paris) 38(Supplement): s182. [Abstract& Salvinia natans]

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387. Palacios-Rios, M., J. J. Castillo Rivero & J. de la C. Tun Garrido. 2000. Los helechos y plantas afines de Othon. P. Blanco, Quintana Roo, Mexico. VI Simposio de Botanica Jardin Botanica Nacional, Habana Cuba: 20. [Abstract& Spanish]

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389. Palacios-Rios, M. & K. Mehltreter. 2000. Avances en biogeografia: una base de datos sobre pteridofitas latinoamericanas. VI Simposio de Botanica Jardin Botanica Nacional, Habana Cuba: 67. [Abstract& Spanish]

390. Palacios-Rios, M., K. Mehltreter & V. Hernandez Hernandez. 2000. Analisis biogeografico de las pteridofitas de Veracruz, Mexico. VI Simposio de Botanica Jardin Botanica Nacional, Habana Cuba: 67. [Abstract& Spanish]

391. Palacios-Rios, M. & B. Oellgaard. 2000. La familia Lycopodiaceae (Pteridophyta) en el estado de Veracruz, Mexico. VI Simposio de Botanica Jardin Botanica Nacional, Habana Cuba: 24. [Abstract& Spanish]

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393. Pandey, R. P. & N. P. Singh. 2000. Studies on phytodiversity of Kumbhalgarh Wildlife Sanctuary in Rajasthan. Journal of Economic & Taxonomic Botany 24: 61-69.

394. Pant, D. D., G. K. Srivastava & P. C. Srivastava. 2000. Ligule in lycopods: A review. Pinsa-B 66: 195-222.

395. Panteris, E., P. Apostolakos, R. Graef & B. Galatis. 2000. Gamma-tubulin colocalizes with microtubule arrays and tubulin paracrystals in dividing vegetative cells of higher plants. Protoplasma 210: 179-187. [Adiantum capillus-veneris]

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399. Parton, R. M., A. F. Dyer, N. D. Read & A. J. Trewavas. 2000. Apical structure of actively growing fern rhizoids examined by DIC and confocal microscopy. Annals of Botany (London) 85: 233-245. [Dryopteris affinis]

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402. Peck, J. H., C. T. Witsell & E. Hendrix. 2000. Dryopteris goldiana and its hybrid with D. celsa new to Arkansas. American Fern Journal 90: 110-111.

403. Pence, V. C. 2000. Cryopreservation of in vitro grown fern gametophytes. American Fern Journal 90: 16-23.

404. Pence, V. C. 2000. Survival of chlorophyllous and nonchlorophyllous fern spores through exposure to liquid nitrogen. American Fern Journal 90: 119-126.

405. Penrod, K. A. 2000. Ecology of hay-scented fern: Spore production, viability and germination. The Pennsylvania State University, 202 pp. [Dissertation& Dennstaedtia punctilobula]

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408. Peroni, A. & G. Peroni. 2000. Prima segnalizione di Cystopteris viridula (Desv.) Desv. (Pteridophyta, Athyriaceae) per l'Italia. Annali del Museo Civico di Rovereto 15: 73-81. [Italian] 409. Peroni, A. & G. Peroni. 2000. Notholaena marantae (L.) Desv. subsp. mirifica sottospecie nuova della Macaronesia (Sinopteridaceae, Pteridophyta). Atti Societa Italiana di Scienze Naturali, Milano 141: 91-95. [Italian]

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411. Perrie, L. R., P. J. Lockhart, P. J. Brownsey & M. F. Large. 2000. Morphological and molecular concordance for the recognition of two species in the New Zealand Polystichum richardii (Hook.) J. Smith complex. Plant Systematics & Evolution 224: 97-107.

412. Peterman, M., E. Burley, L. VanGorden, M. Watson, D. Severson & T. Pauley. 2000. Salamander populations in the Allegheny National Forest: The role of invasive plants. Journal of the Pennsylvania Academy of Science 73: 173-174. [Abstract& Dennstaedtia punctilobula]

413. Petr, T. 2000. Interactions between fish and aquatic macrophytes in inland waters. A review. FAO Fisheries Technical Paper 396: 1-185. [Salvinia]

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417. Petrucio, M. M. & F. A. Esteves. 2000. Uptake rates of nitrogen and phosphorus in the water by Eichhornia crassipes and Salvinia auriculata. Revista Brasileira de Biologia 60: 229-236.

418. Petrucio, M. M. & F. A. Esteves. 2000. Influence of photoperiod on the uptake of nitrogen and phosphorus in the water by Eichhornia crassipes and Salvinia auriculata. Revista Brasileira de Biologia 60: 373-379.

419. Phipps, C. J., B. J. Axsmith, T. N. Taylor & E. L. Taylor. 2000. Gleichenipteris antarcticus gen. et sp. nov. from the Triassic of Antarctica. Review of Palaeobotany & Palynology 108: 75-83.

420. Pinto, C., R. Lima, A. C. Louza, V. Almeida, M. Melo, Y. Vaz, I. N. Fonseca, D. R. Lauren & B. L. Smith. 2000. Bracken fern induced bovine enzootic haematuria in Sao Miguel Island, Azores. Pp. 136-140. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

421. Pitman, J. I. 2000. Absorption of photosynthetically active radiation, radiation use efficiency and spectral reflectance of bracken (Pteridium aquilinum (L.) Kuhn) canopies. Annals of Botany (London) 85(Suppl. B): 101-111.

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423. Pitt, D. G., A. E. Morneault, P. Bunce & F. W. Bell. 2000. Five years of vegetation succession following vegetation management treatments in a jack pine ecosystem. Northern Journal of Applied Forestry 17: 100-109.

424. Playford, G. & R. Dino. 2000. Palynostratigraphy of upper Palaeozoic strata (Tapajos Group), Amazonas Basin, Brazil: Part two. Palaeontographica Abteilung B Palaeophytologie 255: 87-145.

425. Poole, I. & C. N. Page. 2000. A fossil fern indicator of epiphytism in a Tertiary flora. New Phytologist 148: 117-125.

426. Popa, M. E. 2000. Aspects of Romanian Early Jurassic palaeobotany and palynology. Part II. A new species of Pachypteris from Cristian. Review of Palaeobotany & Palynology 111: 31-47.

427. Popa, M. E. & J. H. A. van Konijnenburg-van Cittert. 1999. Aspects of Romanian early Jurassic paleobotany and palynology. Part 1. In situ spores from the Getic Nappe, Banat, Romania. Acta Palaeobotanica Suppl. 2: 181-193.

428. Porembski, S. & W. Barthlott. 2000. Granitic and gneissic outcrops (inselbergs) as centers of diversity for desiccation-tolerant vascular plants. Plant Ecology 151: 19-28.

429. Potter, D. M. & M. S. Baird. 2000. Carcinogenic effects of ptaquiloside in bracken fern and related compounds. British Journal of Cancer 83: 914-920.

430. Prado, J. 2000. A new species of Adiantum (Pteridaceae) from Bahia, Brazil. Brittonia 52: 210-212. [Adiantum discolor]

431. Prado, J. & P. G. Windisch. 2000. The genus Pteris L. (Pteridaceae) in Brazil. Boletim do Instituto de Botanica (Sao Paulo) 13: 103-199.

432. Prakash, A. & K. K. Singh. 2000. Observations on some high valued ethnomedicinal plants among the tribals of Uttar Pradesh. Journal of Medicinal & Aromatic Plant Sciences 22-23: 519-521. [Helminthostachys zeylanica]

433. Prasad, D. & S. D. P. Potluri. 2000. Nitrogen-fixing water fern Azolla as biofertilizer for hot pepper (Capsicum chinense var. Scotch Bonnet). Hortscience 35: 452. [Abstract]

434. Prugnolle, F., A. Rousteau & M. Belin-Depoux. 2000. Spatial occupation of Cyathea muricata Wild. (Cyatheaceae) in Guadeloupean tropical rain forest. I - At the individual level. Acta Botanica Gallica 147: 361-374. [French]

435. Punetha, N. 2000. Phenology of the climbing leaf of Lygodium japonicum (Thunb.) Sw. (Schizaeaceae). Phytomorphology 50: 75-85.

436. Quadri-Spinelli, T., J. Heilmann, T. Rali & O. Sticher. 2000. Bioactive coumarin derivatives from the fern Cyclosorus interruptus. Planta Medica 66: 728-733.

437. Quinby, P. A. 2000. First-year impacts of shelterwood logging on understory vegetation in an old-growth pine stand in central Ontario, Canada. Environmental Conservation 27: 229-241. [Pteridium aquilinum]

438. Quintanilla, L. G., S. Pajaron, E. Pangua & J. Amigo. 2000. Effect of temperature on germination in northernmost populations of Culcita macrocarpa and Woodwardia radicans. Plant Biology (Stuttgart) 2: 612-617.

439. Rahaman, S. & T. Sen. 2000. Is Weatherbya Copel. taxonomically distinct from Lemmaphyllum Presl- Indian Fern Journal 17: 175-182.

440. Rai, A. K. & V. Rai. 2000. Response of NaCl-adapted and unadapted Azolla pinnata-Anabaena azollae complex to salt-stress: Partial photosynthetic processes and respiration. Symbiosis 29: 249-261.

441. Rai, A. N., E. Soderback & B. Bergman. 2000. Cyanobacterium-plant symbioses. New Phytologist 147: 449-481. [Azolla]

442. Railing, C. A. & B. C. McCarthy. 2000. The effects of rhizome severing and nutrient addition on growth and biomass allocation in Diphasiastrum digitatum. American Fern Journal 90: 77-86.

443. Raj, D. K. & A. J. De Britto. 2000. Preliminary phytochemical studies on some species of Polypodiaceae of Tirunelveli Hills. Journal of Economic & Taxonomic Botany 24: 57-60.

444. Rakotondrainibe, F. 2000. Pteridophyte diversity patterns along an elevational gradient in the Parc National de Marojejy, Madagascar. Fieldiana Zoology 97: 19-40.

445. Ramella, L. & P. Perret. 2000. Notulae ad Floram paraquaiensem, 78-81. Candollea 55: 307-318. [Abstract& Dryopteris amambayensis]

446. Ranker, T. A., C. E. C. Gemmill & P. G. Trapp. 2000. Microevolutionary patterns and processes of the native Hawaiian colonizing fern Odontosoria chinensis (Lindsaeaceae). Evolution 54: 828-839.

447. Rask-Andersen, A., J. Boman, A. Grangsjo, M. Silverdal, M. Lindberg, M. Lundberg & L. Svensson. 2000. Asthma, skin symptoms, and allergy in a condom factory. Allergy (Copenhagen) 55: 836-841. [Lycopodium]

448. Read, D. J., J. G. Duckett, R. Francis, R. Ligrone & A. Russell. 2000. Symbiotic fungal associations in 'lower' land plants. Philosophical Transactions of the Royal Society of London B Biological Sciences 355: 815-831. [Gleicheniaceae, Ophioglossales]

449. Redondo, N., M. Horjales, P. Esteban & J. M. Perez Pego. 2000. Novelties in Dryopteris Adanson (Dryopteridaceae) from Galicia. 58: 182. [Spanish]

450. Regalado, L. & C. Sanchez. 2000. Estado taxonomico y de conservacion de Asplenium rectangulare Maxon (Aspleniaceae& Pteridophyta). Revista del Jardin Botanica Nacional (Habana) 21: 9-17. [Spanish]

451. Renzaglia, K. S., R. J. Duff, D. L. Nickrent & D. J. Garbary. 2000. Vegetative and reproductive innovations of early land plants: Implications for a unified phylogeny. Philosophical Transactions of the Royal Society of London B Biological Sciences 355: 769-793.

452. Reyes Jaramillo, I., B. Perez-Garcia & A. Mendoza. 2000. The sexual phase in the fern Llavea cordifolia (Pteridaceae). 48: 19-23. [Spanish]

453. Riba, R. & M. A. Perez Farrera. 2000. New records for the Pteridoflora of the State of Chiapas, Mexico. American Fern Journal 90: 104-105.

454. Ribeiro, T. H., R. W. Smith & J. Rubio. 2000. Sorption of oils by the nonliving biomass of a Salvinia sp. Environmental Science & Technology 34: 5201-5205.

455. Rich, T. 2000. Rigid buckler-fern Dryopteris submontana rediscovered in v.c. 42 Brecon. BSBI Welsh Bull. 67: 13. 456. Richard, M. 2000. Plant Finders Guide to Garden Ferns. Timber Press, Portland OR USA.

457. Richard, M., T. Bernhardt & G. Bell. 2000. Environmental heterogeneity and the spatial structure of fern species diversity in one hectare of old-growth forest. Ecography 23: 231-245.

458. Rickard, M. 2000. Fronds unfurling. Pteridologist 16: 115-116.

459. Rivera, L. W., J. K. Zimmerman & T. M. Aide. 2000. Forest recovery in abandoned agricultural lands in a karst region of the Dominican Republic. Plant Ecology 148: 115-125. [Nephrolepis multiflora]

460. Robertsson, A. M. 2000. The Eemian interglacial in Sweden, and comparison with Finland. Geologie en Mijnbouw 79: 325-333. [Osmunda]

461. Robinson, R. C. 2000. The means to large-scale, effective bracken clearance in the UK. Pp. 156-165. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

462. Robinson, R. C. & C. Page. 2000. Large-scale spraying of bracken. Pp. 166-174. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

463. Robinson, R. C., R. G. Parsons, G. Barbe, P. T. Patel & S. Murphy. 2000. Drift control and buffer zones for helicopter spraying of bracken (Pteridium aquilinum). Agriculture Ecosystems & Environment 79: 215-231.

464. Rodriguez Marzal, J. L. & C. Perez-Carral. 2000. Notes on the presence of Sorbus domestica L. (Rosaceae) in Ciudad Real. Studia Botanica 9: 109-112. [Spanish& Pteridium aquilinum]

465. Roessler, R. 2000. The late Palaeozoic tree fern Psaronius - An ecosystem unto itself. Review of Palaeobotany & Palynology 108: 55-74.

466. Rogge, G. D., A. M. Viana & A. M. Randi. 2000. Cryopreservation of spores of Dicksonia sellowiana: An endangered tree fern indigenous to south and central America. Cryo-Letters 21: 223-230.

467. Romeo, D., A. Troia, C. Burgarella & E. Bellini. 2000. Casparian strips in the leaf intrastelar canals of Isoetes duriei Bory, a Mediterranean terrestrial species. Annals of Botany (London) 86: 1051-1054.

468. Rosado Martinez, A. 2000. A study of the cryptogamic flora in the Sierra Palm forest of Toro Negro Commonwealth Forest in Central Puerto Rico following Hurricane Georges. University of Puerto Rico, Mayaguez. 96 pp. [Masters thesis]

469. Rothwell, G. W. & C. W. Good. 2000. Reconstructing the Pennsylvanian-age filicalean fern Botryopteris tridentata (Felix) Scott. International Journal of Plant Sciences 161: 495-507.

470. Roux, J. P. 2000. The genus Polystichum (Dryopteridaceae). Africa Bull. Nat. Hist. Mus. London (Bot.) 30: 33-79.

471. Roux, J. P. 2000. Pteridophyta: A new combination and new records for the Flora of Malawi. Bothalia 30: 155-159.

472. Roux, J. P. 2000. Pteridophyta. Pp. 37-50. In P. Goldblatt & J. Manning (Eds.). The Cape Flora, Strelitzia 9.

473. Roux, J. P. & A. E. Van Wyk. 2000. Morphology and anatomy of the rhizome and frond in the African species of Polystichum (Pteropsida: Dryopteridaceae). Bothalia 30: 57-68.

474. Rowe, N. P. & T. P. Jones. 2000. Devonian charcoal. Palaeogeography Palaeoclimatology Palaeoecology 164: 331-338.

475. Rozentsvet, O. A., V. M. Dembitsky & S. V. Saksonov. 2000. Occurrence of diacylglyceryl-trimethylhomoserines and major phospholipids in some plants. Phytochemistry (Oxford) 54: 401-407.

476. Rozentsvet, O. A. & S. V. Saksonov. 2000. Seasonal variations of diacylglyceryl-N,N,N-trimethylhomoserine content in Polypodiophyta. Biochemical Society Transactions 28: 873-874. [Dryopteris filix-mas, Pteridium aquilinum]

477. Rueffle, L. & F. Trostheide. 2000. Additional studies in the Upper Cretaceous Flora of Quedlinburg (Germany) and some further Cretaceous localities (geographical relations). Feddes Repertorium 111: 433-444. [German]

478. Rull, V. 2000. Ecostratigraphic study of Paleocene and early Eocene palynological cyclicity in northern South America. Palaios 15: 14-24.

479. Runk, K. 2000. The time of discoveries is not over yet: the story of Braun's holly fern. Eesti Loodus 6: 224-225. [Estonian& Polystichum braunii]

480. Saez, L. 2000. The Asplenium trichomanes L. complex in the northeast Iberian Peninsula. Orsis (Organismes i Sistemes) 15: 27-43. [Catalan]

481. Sahashi, N. 2000. A new combination of the Ophioglossaceae using palynological and morphological studies on the Old World. American Journal of Botany 87 Suppl. 6: 96. [Abstract]

482. Saleem, M., M. Luqman, A. Habib-ur-Rehman, W. Murad & M. Shaheen. 2000. Common Ferns and Fern allies of district Dir. Scientific Khyber 13: 65-72.

483. Salino, A. 2000. Pteridofitas. Pp. 97-103. In M. P. Mendonca & L. V. Lins (Eds.). Lista Vermelha das Especies Ameacadas de Extincao da Flora de Minas Gerais. Fundacao Biodiversitas, Fundacao Zoobotanica de Belo Horizonte, Belo Horizonte. [Portuguese]

484. Salino, A. & L. C. Neves Melo. 2000. A new species of the fern genus Thelypteris (Thelypteridaceae) from southeastern Brazil. Novon 10: 74-77.

485. Sanchez, C. 2000. Hymenophyllaceae. P. 96. In W. Greuter (Ed.). Flora de la Republica de Cuba 4. Taunus, Konigstein. [Spanish]

486. Sanchez Baracaldo, P. 2000. Phylogenetics and biogeography of an Andean fern ratiation, the Jamesonia-Eriosorus complex. University of California, Berkeley. 121 pp. [Dissertation]

487. Sanchez Baracaldo, P. 2000. A recent radiation of neotropical fern genera in paramo ecosystems. American Journal of Botany 87 Suppl. 6: 97. [Abstract& Jamesonia, Eriosorus]

488. Sano, R., M. Ito, S. Kurita & M. Hasebe. 2000. Deparia formosana (Rosenst.) R. Sano, a new name for Diplazium formosanum Rosenst. Acta Phytotaxonomica et Geobotanica 51: 17-20.

489. Sano, R., M. Takamiya, M. Ito, K. Siro & M. Hasebe. 2000. Phylogeny of the lady fern group, tribe Physematieae (Dryopteridaceae), based on chloroplast rbcL gene sequences. Molecular Phylogenetics & Evolution 15: 403-413.

490. Sano, R., M. Takamiya, S. Kurita, M. Ito & M. Hasebe. 2000. Diplazium subsinuatum and D. tomitaroanum should be moved to Deparia according to molecular, morphological, and cytological characters. Journal of Plant Research 113: 157-163.

491. Sarjeant, W. A. S., P. Musteikis, O. Abbink & J. H. A. van Konijnenburg-van Cittert. 2000. A new record of Jurassic palymorphs from Lithuania. Geologija 32: 76-87.

492. Sarvela, J. & C. R. Fraser-Jenkins. 2000. Dryopteris. Pp. 74-84. In B. Jonsell (Ed.). Flora Nordica 1. Stockholm.

493. Saygideger, S. 2000. Sorption of cadmium and their effects on growth, protein contents, and photosynthetic pigment composition of Veronica anagallis-aquatica L. and Ranunculus aquatilis L. Bulletin of Environmental Contamination & Toxicology 65: 459-464. [Azolla pinnata]

494. Schaefer, H. & H. Rasbach. 2000. Asplenium x rouyi Vian (A. onopteris L. x A. scolopendrium L.) in the Azores (Aspleniaceae, Pteridophyta). Willdenowia 30: 219-227.

495. Schneider, E. L. & S. Carlquist. 2000. SEM studies on vessels in ferns. 19. Marsilea. American Fern Journal 90: 32-41.

496. Schneider, E. L. & S. Carlquist. 2000. SEM studies on vessels in ferns. 17. Psilotaceae. American Journal of Botany 87: 176-181.

497. Schneider, E. L. & S. Carlquist. 2000. SEM studies on vessels of the homophyllous species of Selaginella. International Journal of Plant Sciences 161: 967-974.

498. Schneider, E. L. & S. Carlquist. 2000. SEM studies on the vessels of heterophyllous species of Selaginella. Journal of the Torrey Botanical Society 127: 263-270.

499. Schneider, H. 2000. Morphology and anatomy of roots in the filmy fern tribe Trichomaneae H. Schneider (Hymenophyllaceae, Filicatae) and the evolution of rootless taxa. Botanical Journal of the Linnean Society 132: 29-46.

500. Schneider, H. & E. Wollenweber. 2000. Lipophilic exudates of Pteridaceae chemistry and chemotaxonomy. Biochemical Systematics and Ecology 28: 751-777.

501. Schoelch, A. 2000. Relations between submarginal and marginal sori in ferns: I. The sori of selected Hypolepidaceae and Dennstaedtiaceae. Plant Systematics & Evolution 220: 161-183.

502. Schoelch, A. 2000. Relations between submarginal and marginal sori in ferns: II. The sori of selected Dicksoniaceae and Hymenophyllaceae. Plant Systematics & Evolution 220: 185-198.

503. Schuette, S. W., A. R. Maden, D. P. Whittier & K. S. Renzaglia. 2000. Ultrastructure of the spermatozoid of Diphasiastrum digitatum. American Journal of Botany 87 Suppl. 6: 96. [Abstract]

504. Schweitzer, H.-J. 2000. New finds of plant remains in the Lower Devonien of the Eifel. Senckenbergiana Lethaea 80: 371-395. [German]

505. Scott, A. C., J. A. Cripps, M. E. Collinson & G. J. Nichols. 2000. The taphonomy of charcoal following a recent heathland fire and some implications for the interpretation of fossil charcoal deposits. Palaeogeography Palaeoclimatology Palaeoecology 164: 1-31.

506. Scott, A. C., B. Lomax, M. E. Collinson, G. Upchurch & D. Beerling. 2000. Fire across the K/T boundary: initial results from the Sugarite Coal, New Mexico, USA. Palaeogeography, Palaeoclimatology, Palaeoecology 164: 381-395. 507. Sen, T. & M. Mishra. 2000. On the prothallium and reproductive behaviour of the fern genus Pteris (Pteridaceae). Indian Fern Journal 17: 61-71.

508. Serag, M. S., A. El-Hakeem, M. Badway & M. A. Mousa. 2000. On the ecology of Azolla filiculoides LAM. in Damietta District, Egypt. Limnologica 30: 73-81.

509. Shahin, M., A. A. Seawright, B. L. Smith & A. S. Prakash. 2000. Molecular mechanism of bracken carcinogenesis. Pp. 91-95. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

510. Shang, H. S., F. T. Chew, H. T. W. Tan & B. W. Lee. 2000. Cloning and characterising a 6.5kD allergen of the Dicranopteris spp. fern spores: Role of carbohydrate moieties in IgE binding. Journal of Allergy & Clinical Immunology 105: S233. [Abstract]

511. Shay, J. M., M. Herring & B. S. Dyck. 2000. Dune colonization in the Bald Head Hills, southwestern Manitoba. Canadian Field-Naturalist 114: 612-627. [Selaginella densa]

512. Shilin, P. V. 2000. Cretaceous flora of Tyul'kili (Northeastern Priaral'e). 2: 94-101. [Russian]

513. Shorina, N. I. & O. N. Perestoronina. 2000. Taxonomic studies of Russian bracken: 1. Taxonomy of Pteridium in territories of European Russia, Crimea and Caucasus. Pp. 48-51. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

514. Sillett, S. C. & R. Van Pelt. 2000. A redwood tree whose crown is a forest canopy. Northwest Science 74: 34-43. [Polypodium scouleri]

515. Silva, A. S. d. & J. D. d. Almeidae. 2000. Nephrolepis exaltata (Nephrolepidaceae), naturalized in Europe. Anales del Jardin Botanico de Madrid 58: 182.

516. Simabukuro, E. A., L. M. Esteves & G. M. Felippe. 2000. Fern spore rain collected at two different heights at Moji Guacu (Sao Paulo, Brazil). Fern Gazette 16: 147-166.

517. Siman, S. E., A. C. Povey, P. J. O'Connor, T. H. Ward, G. P. Margison & E. Sheffield. 2000. The genotoxicity of fern spores. Pp. 99-105. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

518. Siman, S. E., A. C. Povey, T. H. Ward, G. P. Margison & E. Sheffield. 2000. Fern spore extracts can damage DNA. British Journal of Cancer 83: 69-73.

519. Singh, U. P., B. Prithiviraj & B. K. Sarma. 2000. Development of Erysiphe pisi on some pea (Pisum sativum) cultivars and on non-hosts. Zeitschrift Fuer Pflanzenkrankheiten und Pflanzenschutz 107: 53-58. [Nephrolepis cordifolia]

520. Singh, Y. V. & B. K. Mandal. 2000. Rate of mineralization of Azolla, other organic materials, and urea in waterlogged soils. Tropical Agriculture 77: 119-122.

521. Sinha, B. K., S. K. Srivastava & R. D. Dixit. 2000. Floristic diversity of the pteridophytic flora of Great Nicobar Island, India: Need to conserve. Journal of Economic & Taxonomic Botany 24: 507-555.

522. Slocum, M., T. M. Aide, J. K. Zimmerman & L. Navarro. 2000. The woody vegetation in fern lands and riparian woodlands in the Reserva Cientifica Ebano Verde, Dominican Republic. Moscosoa 11: 38-56. [Spanish& Dicranopteris pectinata]

523. Slocum, M. G. 2000. Logs and fern patches as recruitment sites in a tropical pasture. Restoration Ecology 8: 408-413. [Nephrolepis]

524. Smith, A. R. 2000. The ferns of Florida by Gil Nelson. Flora of North America Newsletter 14: 11. [Review]

525. Smith, A. R. & B. J. Hoshizaki. 2000. Microsorum whiteheadii (Polypodiaceae), an attractive new species from Sumatra. Novon 10: 411-414.

526. Smith, A. R., H. Schneider, B. S. Parris, C. H. Haufler, T. A. Ranker, J. P. Therrien & J. M. O. Geiger. 2000. Phylogeny of Grammitidaceae and Polypodiaceae inferred from two large data sets: rbcL and morphology. American Journal of Botany 87 Suppl. 6: 97. [Abstract]

527. Smith, B. L., D. R. Lauren & A. S. Prakash. 2000. Bracken fern (Pteridium) toxicity in animal and human health. Pp. 76-85. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

528. Smith, R. T. 2000. The spread of bracken: an end of century asessment of factors, risks and land use realities. Pp. 2-8. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

529. Soltis, D. E. & P. S. Soltis. 2000. Contributions of plant molecular systematics to studies of molecular evolution. Plant Molecular Biology 42: 45-75.

530. Soltis, P. S. & D. E. Soltis. 2000. The role of genetic and genomic attributes in the success of polyploids. Proceedings of the National Academy of Sciences of the United States of America 97: 7051-7057.

531. Somvanshi, R., M. Kataria, S. Dash, V. Devi & R. Kumar. 2000. Evaluation of clinico-pathological changes occurring in laboratory rats on feeding of Cheilanthes farinosa fern. Indian Veterinary Medical Journal 24: 247-249.

532. Son, K. C., S. H. Lee, S. G. Seo & J. E. Song. 2000. Effects of foliage plants and potting soil on the absorption and adsorption of indoor air pollutants. 41: 305-310. [Korean& Nephrolepis exaltata]

533. Speer, W. D. 2000. A systematic assessment of British and North American Pteridium using cpDNA gene sequences. Pp. 37-42. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

534. Spessa, A., M. P. Schwarz & M. Adams. 2000. Sociality in Amphylaeus morosus (Hymenoptera: Colletidae: Hylaeinae). Annals of the Entomological Society of America 93: 684-692. [Cyathea australis]

535. Srivastava, S. C. 2000. Genus Krauselitheca Srivastava& a detached microsporangium from middle Triassic (Nidpur) of India displaying pteridophytic affiliation. Indian Fern Journal 17: 129-135.

536. Stamps, R. H. 2000. Effects of nitrogen application rates on leachate nitrogen concentrations and leatherleaf fern establishment. Hortscience 35: 509. [Abstract& Rumohra adiantiformis]

537. Stanley, B. 2000. Thomas Cheesemand's field notebooks: more excerpts, with reference to Phylloglossum drummondii. Auckland Bot. Soc. J 55: 6-7.

538. Stensvold, M. C. 2000. The conservation status of Ophioglossaceae in southern Alaska. American Journal of Botany 87 Suppl. 6: 92. [Abstract] 539. Stetsenko, N. M. & A. V. Andreyev. 2000. Rare elements in ashes in some species of ferns introduced in Ukraine. 36: 110-116. [Russian& Dryopteris varia, Onoclea sensibilis, Polystichum tripteron]

540. Stetsenko, N. M. & O. V. Khrapko. 2000. Biochemical changes in preserved spores as a factor of reducing their vital capacity. Monsoon Climate Plants II: 204-205. [Abstract]

541. Stilinovic, B. & J. Hrenovic. 2000. Nutrient removal from leachate of the Zagreb landfill Jakusevec. Acta Botanica Croatica 59: 215-223. [Salvinia natans]

542. Stockey, R. A. & S. Y. Smith. 2000. A new species of Millerocaulis (Osmundaceae) from the Lower Cretaceous of California. International Journal of Plant Sciences 161: 159-166.

543. Story II, J. W. 2000. The relationship between Pleopeltis polypodioides (Polypodiaceae) and associated mosses. Proceedings of the Oklahoma Academy of Science 80: 99-104.

544. Stuart, R. J. & S. Polavarapu. 2000. Egg-mass variability and differential parasitism of Choristoneura parallela (Lepidoptera: Tortricidae) by endemic Trichogramma minutum (Hymenoptera: Trichogrammatidae). Annals of the Entomological Society of America 93: 1076-1084. [Thelypteris palustris]

545. Su, Y., C. M. Sun, H. H. Chuang & P. T. Chang. 2000. Studies on the cytotoxic mechanisms of ginkgetin in a human ovarian adenocarcinoma cell line. Naunyn-Schmiedebergs Archives of Pharmacology 362: 82-90. [Selaginella moellendorffii]

546. Subarnas, A., K. Koshimizu, A. Murakami, H. Ohigashi, H. Hayashi, C. Hadiansyah & A. Supriatna. 2000. Anti-tumor-promoting and antimutagenic activity of primates-consumed plants from Indonesia. Phytomedicine (Jena) 7 (Supplement 2): 101-102. [Abstract& Alsophila glauca]

547. Subarnas, A. & H. Wagner. 2000. Analgesic and anti-inflammatory activity of proanthocyanidin from the roots of Polypodium feei METT. Phytomedicine (Jena) 7 (Supplement 2): 54. [Abstract]

548. Subarnas, A. & H. Wagner. 2000. Analgesic and anti-inflammatory activity of the proanthocyanidin shellegueain A from Polypodium feei METT. Phytomedicine (Jena) 7: 401-405.

549. Subhashini, R., K. Kumar & S. Kannaiyan. 2000. Variation revealed by RAPD-PCR profiles of microsymbiont Anabaena azollae strains from four N2 fixing Azolla cultures. Acta Biotechnologica 20: 169-174.

550. Subhashini, R., K. Kumar & S. Kannaiyan. 2000. Biodiversity of Anabaena azollae isolates from different Azolla cultures. Indian Journal of Experimental Biology 38: 1168-1171.

551. Sugai, M., T. Iinuma, I. Karahara & M. Watanabe. 2000. Spore germination of the fern Adiantum capillus-veneris is mediated by UV/blue light receptor and multiple phytochrome systems. 13th International Congress on Photobiology (San Francisco): [Abstract]

552. Suter, M., J. J. Schneller & J. C. Vogel. 2000. Investigations into the genetic variation, population structure, and breeding systems of the fern Asplenium trichomanes subsp. quadrivalens. International Journal of Plant Sciences 161: 233-244.

553. Sutton, D. A., A. Hughes & T. B. Bulmer. 2000. Recent records of pteridophytes for Belize, Central America. Bull. Nat. Hist. Mus. (London), Bot 30: 81-99.

554. Svensson, M. E., H. Johannesson & P. Engstrom. 2000. The LAMB1 gene from the clubmoss, Lycopodium annotinum, is a divergent MADS-box gene, expressed specifically in sporogenic structures. Gene (Amsterdam) 253: 31-43.

555. Sztein, A. E., J. D. Cohen & T. J. Cooke. 2000. Evolutionary patterns in the auxin metabolism of green plants. International Journal of Plant Sciences 161: 849-859.

556. Takamiya, M., N. Ohta, C. Fujimaru-Takaoka & K. Uki. 2000. Cytological and reproductive studies of Japanese Diplazium (Woodsiaceae& Pteridophyta). II. Polyploidy and hybridity in the species group with summer-green bi- to tripinnate leaves. Journal of Plant Research 113: 203-215.

557. Tan, C. H., S. H. Jiang & D. Y. Zhu. 2000. Huperzine P, a novel Lycopodium alkaloid from Huperzia serrata. Tetrahedron Letters 41: 5733-5736.

558. Taylor, W. C. & D. F. Brunton. 2000. Isoetes. Pp. 62-63. In A. Rhoads & T. Block (Eds.). The Plants of Pennsylvania. University of Pennsylvania Press, Philadelphia.

559. Taylor, W. C. & S. B. Hoot. 2000. Evolutionary relationships and biogeography of Isoetes based on nucleotide sequences. American Journal of Botany 87 Suppl. 6: 97. [Abstract]

560. Tejedor, A. & B. W. McAlpin. 2000. Ophioglossum pendulum L. naturalized in Miami, Dade County, Florida. American Fern Journal 90: 46-47.

561. Teng, W. L. & M. C. Teng. 2000. The impact of a pulse treatment of penicillin-G and streptomycin sulfate on sporophyte regeneration of Platycerium bifurcatum. Plant Cell Reports 19: 345-350.

562. Thapa, N. 2000. Ferns and fern allies of the Milke-Jaljale area, Nepal, in the Eastern Himalayas. Newsl. Himalayan Bot 27: 8-17.

563. Therrien, J. P. & C. H. Haufler. 2000. Phylogeny and biogeography of Selaginella subg. Tetragonastachys based on nucler ribosomal ITS sequence data. American Journal of Botany 87 Suppl. 6: 98. [Abstract]

564. Therrien, J. P., M. D. Windham & C. H. Haufler. 2000. Hybridization and putative allotetraploid speciation in Selaginella subg. Tetragonostachys. American Journal of Botany 87 Suppl. 6: 98. [Abstract]

565. Thomas, H., H. M. Thomas & H. Ougham. 2000. Annuality, perenniality and cell death. Journal of Experimental Botany 51: 1781-1788. [Pteridium aquilinum]

566. Thomson, J. A. 2000. Morphological and genomic diversity in the genus Pteridium (Dennstaedtiaceae). Annals of Botany (London) 85(Suppl. B): 77-99.

567. Thomson, J. A. 2000. New perspectives on taxonomic relationships in Pteridium. Pp. 15-34. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

568. Thomson, J. A., P. H. Weston & M. K. Tan. 2000. A molecular approach to tracing major lineages in Pteridium: update and amendment. Pp. 35-36. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth.

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571. Tribsch, A. 2000. Lycopodium annotinum subsp. alpestre: auch in den Alpen- Wulfenia 7: 49-56. [German]

572. Tripathi, S. D., P. K. Aravindakshan, S. Ayyappan, J. K. Jena, H. K. Muduli, S. Chandra & K. C. Pani. 2000. New high in carp production in India through intensive polyculture. Journal of Aquaculture in the Tropics 15: 119-128. [Azolla]

573. Trivinho-Strixino, S., L. C. S. Correia & K. Sonoda. 2000. Phytophilous Chironomidae (Diptera) and other macroinvertebrates in the ox-bow Infernao Lake (Jatai Ecological Station, Luiz Antonio, SP, Brazil). Revista Brasileira de Biologia 60: 527-535. [Salvinia auriculata]

574. Tropepi, R. & C. Ribecai. 2000. An unusual process structure in Tresarcus, a new acritarch genus from the Ordovician of Oland, Sweden. Review of Palaeobotany & Palynology 111: 103-109.

575. Tryon, R. 2000. Systematic notes on the old world fern genus Oleandra. Rhodora 102: 428-438.

576. Tsunoda, T. & K. Mori. 2000. No distributional association between the tick Haemaphysalis longicornis (Acari: Ixodidae) and plant surface area. Ecological Research 15: 357-359. [Pteridium aquilinum]

577. Tsuyuzaki, S. 2000. Characteristics of "number of veins" to estimate leaf maturity in Pteris mutilata (Pteridaceae). Journal of Plant Research 113: 415-418.

578. Tuomisto, H. & A. D. Poulsen. 2000. Pteridophyte diversity and species composition in four Amazonian rain forests. Journal of Vegetation Science 11: 383-396.

579. Uheda, E. & S. Nakamura. 2000. Abscission of Azolla branches induced by ethylene and sodium azide. Plant & Cell Physiology 41: 1365-1372.

580. Ukpong, I. E. 1999. Environmental determinants of mangrove structure as revealed by regression analysis. Nigerian Journal of Botany 12: 175-186.

581. Ukpong, I. E. 2000. Determinants of structure in a Nigerian mangrove forest. Acta Botanica Hungarica 42: 323-333.

582. Ukpong, I. E. 2000. Mangrove vegetation and soils along an accreting part of the coast of West Africa and their implication for conservation. Acta Botanica Hungarica 42: 335-346.

583. Ukpong, I. E. 2000. Gradient analysis in mangrove swamp forest. Tropical Ecology 41: 1-9.

584. Ukpong, I. E. 2000. Ecological classification of Nigerian mangroves using soil nutrient gradient analysis. Wetlands Ecology & Management 8: 263-272. [Acrostichum aureum]

585. Ukpong, I. E. & A. O. Etim. 2000. Catenary variation, soil fertility status and subsistent farming in a part of Akwa Ibom State, Nigeria. Environmental Analar 5: 380-391.

586. Vaidya, R. R. & K. N. Dhumal. 2000. Studies on nutritive values in some vegetables used by tribals of Mahabaleshwar. Journal of Medicinal & Aromatic Plant Sciences 22-23: 312-313. [Athyrium hohenackerianum]

587. Vaishampayan, A., R. P. Sinha, A. K. Gupta & D. P. Haeder. 2000. A cyanobacterial recombination study, involving an efficient N2-fixing non-heterocystous partner. Microbiological Research 155: 137-141. [Azolla]

588. van der Kaars, S., X. Wang, P. Kershaw, F. Guichard & D. A. Setiabudi. 2000. A late Quaternary palaeoecological record from the Banda Sea, Indonesia: Patterns of vegetation, climate and biomass burning in Indonesia and northern Australia. Palaeogeography Palaeoclimatology Palaeoecology 155: 135-153.

589. van Konijnenburg-van Cittert, J. H. A. 2000. Osmundaceous spores throughout time. Pp. 435-449. In M. M. Harley, C. M. Morton & S. Blackmore (Eds.). Pollen and Spores: Morphology and Biology.

590. van Konijnenburg-van Cittert, J. H. A. 2000. Parameters in leaf and cuticle morphology. The Palaeobotanist 49: 9-15.

591. Van Uffelen, G. A. 2000. Studying spores of the Polypodiaceae: a comparison of SEM with other microscope techniques. Pp. 125-131. In M. M. Harley, C. M. Morton & S. Blackmore (Eds.). Pollen and spores: morphology and biology. Royal Botanic Gardens, Kew.

592. Ved, H. S., J. R. Dave, G. J. Kant & B. P. Doctor. 2000. Huperzine A provides neuroprotection against oxidative stress induced neuronal damage. Society for Neuroscience Abstracts 26: 772.15. [Abstract& Huperzia serratia]

593. Vega, J. C. 2000. Further observations on the Carboniferous Sporangiate frond Rinconadia. Boletin de la Academia Nacional de Ciencias (Cordoba) 64: 71-77.

594. Vega Hernandez, E. & R. Caudales. 2000. Pteridophytes of the Okavango Delta, Botswana (Southern Africa). Anales del Jardin Botanico de Madrid 58: 311-323.

595. Vergara-Silva, F., L. Martinez-Castilla & E. R. Alvarez-Buylla. 2000. MADS-box genes: Development and evolution of plant body plans. Journal of Phycology 36: 803-812.

596. Verma, S. C. 2000. An appraisal of some issues in the evolutionary cytogenetics of homosporous ferns. Bionature 20: 55-74.

597. Verma, S. C. 2000. Evolutionary biology of homosporous ferns: an enigma. Indian Fern Journal 17: 36-49.

598. Verma, S. C., A. Kaur & P. M. Selvan. 2000. Experimental studies on the gametophyte generation of homosporous ferns III. Sexuality, gametangial sequence and mating system in some species of Pteris. Indian Fern Journal 17: 136-174.

599. Veys, P., A. Lejeune & C. Van Hove. 2000. The pore of the leaf cavity of Azolla: Interspecific morphological differences and continuity between the cavity envelopes. Symbiosis 29: 33-47.

600. Villalobos-Salazar, J., H. Hernandes, A. Meneses & G. Salazar. 2000. Factors which may affect ptaquiloside levels in milk: effects of altitude, braken fern growth stage and milk processing. Pp. 68-75. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

601. Villar de Seoane, L. 2000. Ruflorinia papillosa sp. nov. from the Lower Cretaceous of Patagonia, Argentina. Palaeontographica Abteilung B Palaeophytologie 255: 79-85.

602. Vincens, A., M. A. Dubois, B. Guillet, G. Achoundong, G. Buchet, V. K. K. Beyala, C. de Namur & B. Riera. 2000. Pollen-rain-vegetation relationships along a forest-savanna transect in southeastern Cameroon. Review of Palaeobotany & Palynology 110: 191-208. [Pteridium]

603. Vormisto, J., O. L. Phillips, K. Ruokolainen, H. Tuomisto & R. Vasquez. 2000. A comparison of fine-scale distribution patterns of four plant groups in an Amazonian rainforest. Ecography 23: 349-359.

604. Wachtler, M. & J. H. A. van Konijnenburg-van Cittert. 2000. La flora fossile della Formazione di La Valle Wengen (Ladinico) nelle Dolomiti (Italia). Studi Trentini di Scienze Naturali. Acta Geologica 75: 113-146.

605. Wachtler, M. & J. H. A. van Konijnenburg-van Cittert. 2000. The fossil flora of the Wengen Formation (Ladinian) in the Dolomites (Italy). Beitraege zur Palaeontologie 25: 105-141.

606. Wanner, S. C. & M. Pusch. 2000. Use of fluorescently labeled Lycopodium spores as a tracer for suspended particles in a lowland river. Journal of the North American Benthological Society 19: 648-658.

607. Wardman, O. L. & M. R. Thomas. 2000. Aerial applications of pesticides in the United Kingdom: 1978 to 1998. Pest Management Science 56: 237-244.

608. Watkins Jr., J. E. & D. R. Farrar. 2000. Biosystematic investigation of the rare, disjunct, rockhouse fern Thelypteris pilosa var. alabamensis (Thelypteridaceae: Stegnogramma). American Journal of Botany 87 Suppl. 6: 99. [Abstract]

609. Watkins Jr., J. E. & J. D. Pitillo. 2000. The conservation status of Ophioglossaceae in the Southeastern United States. American Journal of Botany 87 Suppl. 6: 92. [Abstract]

610. Watkins Jr., J. E., A. Diamond & R. R. Dute. 2000. Distribution and new county records of the fern: Botrychium lunarioides (Michaux) Sw. in Alabama. Castanea 65: 64-68.

611. Watts, C. J. 2000. The effect of organic matter on sedimentary phosphorus release in an Australian reservoir. Hydrobiologia 431: 13-25. [Isoetes]

612. Weaver, P. L. 2000. Elfin woodland recovery 30 years after a plane wreck in Puerto Rico's Luquillo Mountains. Caribbean Journal of Science 36: 1-9.

613. Wellman, C. H. & J. Gray. 2000. The microfossil record of early land plants. Philosophical Transactions of the Royal Society of London B Biological Sciences 355: 717-732.

614. Wells, A. J. & J. A. Taylor. 2000. Bracken research--what have we achieved- Visualizing past, present and future. Pp. 9-14. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Pteridium aquilinum]

615. Whittier, D. P. 2000. Gametophyte and young sporophyte development in the Ophioglossaceae. American Journal of Botany 87 Suppl. 6: 92. [Abstract]

616. Whittier, D. P. & J. E. Braggins. 2000. Observations on the mature gametophyte of Phylloglossum (Lycopodiaceae). American Journal of Botany 87: 920-924.

617. Wijeyaratne, M. J. S. & W. M. Perera. 2000. Studies on the feasibility of using indigenous fishes for controlling aquatic macrophytes in Sri Lanka. Journal of Aquaculture in the Tropics 15: 253-260. [Salvinia molesta, Azolla pinnata]

618. Wikstrom, N. & P. Kenrick. 2000. Phylogeny of epiphytic Huperzia (Lycopodiaceae): Paleotropical and neotropical clades corroborated by rbcL sequences. Nordic Journal of Botany 20: 165-171.

619. Wikstrom, N. & P. Kenrick. 2000. Relationships of Lycopodium and Lycopodiella based on combined plastid rbcL gene and trnL intron sequence data. Systematic Botany 25: 495-510.

620. Wilde, V. & A. R. Hemsley. 2000. Morphology, ultrastructure and affinity of Barremian (Lower Cretaceous) megaspores Dijkstraisporites and Paxillitriletes from Brilon-Nehden, Germany. Palynology 24: 217-230.

621. Williamson, M. R., J. H. Blake, S. N. Jeffers & S. A. Lewis. 2000. First reports of Aphelenchoides fragariae on royal fern and on Hosta and other hosts in South Carolina. Plant Disease 84: 593. [Osmunda regalis]

622. Williston, P. & P. Batemucci. 2000. The Ophioglossaceae of British Columbia. American Journal of Botany 87 Suppl. 6: 99. [Abstract]

623. Windisch, P. G. 2000. On the itineraries of Alfred and Alexander Curt Brade in Costa Rica. American Fern Journal 90: 19-20.

624. Windisch, P. G. 2000. Pteridologia no Brasil no ano 2005: possiveis cenarios. Pp. 122-128. In T. B. Cavalcanti & B. M. T. Walter (Eds.). Topicos atuais em botanica. Embrapa/Sociedade Botanica do Brasil, Brasilia. [Portuguese]

625. Windisch, P. G. & H. M. Longhi-Wagner. 2000. Herbarios: visao geral, estrutura e manejo. Carnos de Pesquisa--Serie Botanica--Universidade Sta. Cruz do Sul. Santa Cruz do Sul 12: 7-10. [Portuguese]

626. Wittig, R. 2000. Luzulo luzuloidis-Thelypteridetum limbospermae, a fringe community of acidic forest sites in the higher Mittelgebirge. Tuexenia 20: 131-141. [German& Thelypteris limbosperma]

627. Wojewoda, W. 2000. Typhula quisquiliaris (Cantharellales): A species new to Poland. Acta Mycologica 35: 29-35. [Pteridium aquilinum]

628. Wollenweber, E. & H. Schneider. 2000. Lipophilic exudates of Pteridaceae: Chemistry and chemotaxonomy. Biochemical Systematics & Ecology 28: 751-777.

629. Woodin, S. & C. Gordon. 2000. The effects of environmental change and bracken in competition with heather. P. 190. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract& Pteridium aquilinum]

630. Wynn, J. M., J. L. Small, R. J. Pakeman & E. Sheffield. 2000. An assessment of genetic and environmental effects on sporangial development in bracken (Pteridium aquilinum (L.) Kuhn) using a novel quantitative method. Annals of Botany (London) 85(Suppl. B): 113-115.

631. Wynn, J. M., J. L. Small, R. J. Pakeman & E. Sheffield. 2000. An assessment of genetic and environmental effects on sporangial development in bracken [Pteridium aquilinum (L.) Kuhn]. P. 188. In J. A. Taylor & R. T. Smith (Eds.). Bracken fern: toxicity, biology and control. International Bracken Group, Aberystwyth. [Abstract]

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