| shellflower | (n) showy perennial of marshlands of eastern and central North America having waxy lanceolate leaves and flower with lower part creamy white and upper parts pale pink to deep purple, Syn. shell-flower, turtlehead, Chelone glabra, snakehead, snake-head |
| Turtlehead | n. (Bot.) An American perennial herb (Chelone glabra) having white flowers shaped like the head of a turtle. Called also |