Synonyms for California Bluebell (same or very similar meaning)
WordNet sense 1 (desert plant of southern California with blue or violet tubular flowers in terminal racemes):
whitlavia, Phacelia minor, Phacelia whitlaviaWordNet sense 2 (annual of southern California with intricately branched stems and lax cymes of aromatic deep blue bell-shaped flowers):
Phacelia campanulariaFrom the ODE community, based on WordNetadd/edit