turtlehead
n. (产于美洲的)山玄参属的草本植物
近义词：shell-flower，shellflower，Cheloneglabra，snakehead，snake-head，
英英释义
Noun
- 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