| Noun | 1. | scorpionweed - any plant of the genus Phacelia flower - a plant cultivated for its blooms or blossoms genus Phacelia - American herbs with usually pinnatifid leaves and blue or purple or white flowers in scorpioid cymes Phacelia campanularia, California bluebell - annual of southern California with intricately branched stems and lax cymes of aromatic deep blue bell-shaped flowers California bluebell, Phacelia minor, Phacelia whitlavia, whitlavia - desert plant of southern California with blue or violet tubular flowers in terminal racemes fiddleneck, Phacelia tanacetifolia - hairy annual of California to Mexico with crowded cymes of small blue to lilac or mauve flowers |