The California Native Plant Society has recently begun a program called the Rare Plant Treasure Hunt (www.cnps.org/cnps/rareplants/treasurehunt). The purpose is to inform conservation efforts by updating occurence records in the CNDDB of rare plants throughout California and to get as many volunteers as possible involved. If you are interested in being involved or leading a trip please contact treasurehunt@cnps.org
Also a Rare Plant Treasure Hunt field trip into the Mojave desert is planned for May 5-8th with Steve Hartman. For more information and to RSVP go to http://www.meetup.com/Rare-Plant-Treasure-Hunt/.