purpleinopp said:The first thing I do is check the bonap map:
http://bonap.net/Napa/TaxonMap...
Find a reliable source of characteristics:
https://gobotany.nativeplanttr...
And more pics from other trusted sites:
https://weedid.missouri.edu/we...
The next step would be comparing to the other species indicated as present in the area on the bonap maps. Sometimes I go ahead and do that for ya', but not this late in the evening. ; )