I know nothing about the plant, except that it is adorable.
I did find this photo and an excerpt from their "Processing Seeds" pdf.
http://www.hazmac.biz/040209/0...
"Fruit: Achene, 9.0–12.0 mm, winged
Seed: enclosed within the hard indehiscent fruit
Rub fruits over medium screen.
Blower speed: 2.0 to remove chaff.
Higher blower speeds required to sort out lighter sterile
fruits. Some hand sorting to remove pedicels"
(Wall, M. and J. Macdonald. 2009. Processing Seeds of California Native Plants for Conservation, Storage,
and Restoration. Rancho Santa Ana Botanic Garden Occasional Publication, Number 10, Claremont, CA.
216 pages.
ISBN 978-0-9819717-0-4. First printing: 70 copies, August 2009. Copyright © 2009 by Rancho Santa Ana
Botanic Garden.)
I guess that's an alternate method to try.
Good Luck! It's is a very cute plant!