Try contacting the biology (botany?) department at the University of
California, Riverside (I don't have their number handy, try information for
Riverside, CA). I believe they have nationally recognized programs in this
area.
Richard Chute [log in to unmask]
Rancho Santa Ana Botanic Garden Claremont, CA 91711
Phone: (909) 625-8767, ext. 222
FAX: (909) 626-6760