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AFS Spore Exchange List as of

3-Sep-2013

If you wish to request or donate spores, please visit the spore exchange page of the American Fern Society:

Listed below is a snapshot of the entire spore bank inventory as of the date at the top of the page. It is arranged alphabetically by botanical name and includes unique order numbers to simplify requesting and processing orders.

Key to column headings:

pic: Links to donor supplied picture(s) of the actual plant the spores were collected from. Right click to open new tab or window.

Most rcnt dt-donor: The year and donor initials of the most recent spore donation.

Packets rcnt (tot): The number of spore packets available of the most recent donation and the total number of packets available including past donations. Each packet contains approximately 3 to 10 cubic millimeters of spores (several thousand spores). Those marked as “few spores” in the notes column contain less than 2 cubic millimeters.

Fr SZ: Approximate maximum frond size. Very Small = less than 4 inches, Small = 4 inches to 1 foot, Medium = 1 to 3 feet, Large = 3 to 6 feet, Very Large = greater than 6 feet.

USDA Zone: Minimum and maximum growing zones based on various books and the internet. If different sources gave different zone ranges, the warmest cold range and the coolest warm range were used. Zones with question marks are estimates based on the climate of the fern's most northern boreal range or southern austral range, taking into account a 2 degree Celsius temperature drop for each 1000 ft of elevation. Hardiness comments in the notes column give the coldest winter temperature the cultivated fern is known to survive, as reported by the donor.

Notes: Common synonyms and miscellaneous notes.

Viability Test: Spores were sown on sterilized Pro-Mix HP soil and maintained for 8 weeks at room temperature 11 inches below two 20W cool white fluorescent tubes illuminated 14 hours per day. ++ = Most or all spores germinated, + = partial germination, -? = Very few spores germinated, - = no germination, (blank) = not tested.

The following donors contributed spores to this list:
Andrzej Leśniewski (AL), Brian Aikins (BA), Bart Hendrikx (BH), Barbara Joe Hoshizaki (BJH), Denia Mandt (DE), Doug Eckel (DE2), Daniel Yansura (DY), Geoffrey Finance-Winterspoon (GFW), Giles Reed (GR), John Knouse (JK), Kylie Stocks (KS), Ro Walraven (RW), and Tom Richardson (TR). If you were a donor and do not see your name in this list, please contact the exchange curator at spores.afs@comcast.net to grant permission to list your name.

Changes in availability since last month's list

New

Asplenium trichomanes 'Ramo-cristatum' (2027), Astrolepis integerrima (332), Cystopteris fragilis (collected in UK) (2029), Dryopteris affinis 'Cristata The King' (2026), Dryopteris dilatata Crested group (2028), Dryopteris dilatata 'Crispa Whiteside' (980), Dryopteris filix-mas 'Cristata' (1003), Woodsia obtusa (1987).

Refreshed supply

Adiantum aleuticum (7), Adiantum aleuticum subsp. subpumilum (12), Dryopteris purpurella (1085).

No longer available

Dryopteris clintoniana, Dryopteris filix-mas 'Incisa Cristata'.

Order Num

Genus

species

variant

pic

Most rcnt dt - donor

Packets rcnt (tot)

Fr SZ

USDA Zone

Notes

Viability Test
sown dt result

Acrostichum

aureum