Guide to California Wildflowers
Lara Hartley has set up a new Flickr group for photos of California wildflowers - it is another resource for flower identification. There is an older Flickr group, CaliFlora, of which the new group can be regarded as a subset. The required tags allow one to search for a flower whose name is unknown, based on flower color and petals, and flower family if one is able to deduce that from the plant. From the group guidelines:
A companion group to CaliFlora, but with a few more TAGGING GUILDELINES.
A group to create an online wildflower field guide of flowering plants native (or naturalized) in california. No trees or ferns.
Each flower posted must have the following tags:
___* Common Name – Of course each species has many local and common names. Please include at least the one you know it by.
___* Binomial Name - Genus species
___* Genus Name separately
___* Flower color(s) – Primary color and any variations from this list: purple, blue, green, yellow, orange, brown, red, pink or white. When questionable or in doubt, add all applicable colors.
___* Flower shape(s) – Primary shape of the flower from the following list: 2petals, 3petals, 4petals, 5petals, 6petals, manypetals, longcluster, roundcluster or oddshaped
___* Family Name - the taxonomic family (usually ending in “aceae.”)
___* County.
Additionally, it will be helpful to also tag:
___*Location - general is good enough

(Example)
Links


