在萼片和蒴果上的毛被在密度上大大变化。
The indumentum on the sepals and capsule varies greatly in density.
美国南部木藤植物，蓝紫色花上有似皮革的反曲的萼片。
Woody vine of the southern United States having purple or blue flowers with leathery recurved sepals.
萼片：一朵花中位置紧接在花瓣下方的结构。
Sepal One of the structures situated immediately below the petals of a flower.
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