| california bluebell | (n) desert plant of southern California with blue or violet tubular flowers in terminal racemes, Syn. whitlavia, Phacelia whitlavia, Phacelia minor |
| california bluebell | (n) annual of southern California with intricately branched stems and lax cymes of aromatic deep blue bell-shaped flowers, Syn. Phacelia campanularia |
| virginia bluebell | (n) smooth erect herb of eastern North America having entire leaves and showy blue flowers that are pink in bud, Syn. Virginia cowslip, Mertensia virginica |
| harebell | (n) perennial of northern hemisphere with slender stems and bell-shaped blue flowers, Syn. bluebell, Campanula rotundifolia |
| prairie gentian | (n) one of the most handsome prairie wildflowers having large erect bell-shaped bluish flowers; of moist places in prairies and fields from eastern Colorado and Nebraska south to New Mexico and Texas, Syn. tulip gentian, bluebell, Eustoma grandiflorum |
| wild hyacinth | (n) sometimes placed in genus Scilla, Syn. harebell, Hyacinthoides nonscripta, Scilla nonscripta, wood hyacinth, bluebell |
