The lupines are a wonderful genus -- drought-tolerant, beautiful, and an important habitat plant for butterflies. Like all members of the legume family, lupines also fix nitrogen in the soil (which naturally fertilizes the other plants growing around them).
L. nanus? West Portal
green SB lupine
silver SB lupine Lupinus (formosus?)
Mission Blue butterfly on San Bruno Mountain.
Silver Lupine [Lupinus albifrons var. albifrons] Bonny Doon