Morning glory

 

Coastal Bluff Morning-Glory (Calystegia purpurata subsp. saxicola) 

This photograph is from 14 May 2011, but 2013 also seems to be a very good year for this native perennial on Bodega Head.

P.S.  The subspecies name "saxicola" means "rock-dwelling."

P.P.S.  Calflora calls this species the Bodega Morning-Glory!