California bluebell n 1: desert plant of southern California with blue or violet tubular flowers in terminal racemes [syn: {California bluebell}, {whitlavia}, {Phacelia minor}, {Phacelia whitlavia}] 2: annual of southern California with intricately branched stems and lax cymes of aromatic deep blue bell-shaped flowers [syn: {California bluebell}, {Phacelia campanularia}]