#1 is Ceanothus; possibly Ceanothus cuneatus var. ramulosus. #3 looks like an Oxalis. #5 might be aHieracium sp.
I agree that 1 is Ceanothus cuneatus var. ramulosus. 4 is Lupinus chamissonis and 2 is Astragalus curtipes, I believe. Wasn't able to find the other 2.