petaln.花瓣petal-shaped finned tube花瓣管petal basket flow diverter花篮式导流器petals with erose margins.花瓣具啮蚀状的边缘。petal-like charged surface瓣形带电面Petaloid appendages absent.瓣状附属物无。Petals reflexed at anthesis.花瓣反折的在花期。Petalomonas inflexa var. minorn.弯曲瓣胞藻小型变种petal type concentrating diverter伞集流Petalomonas involuta var. ovatan.内卷瓣胞藻卵形变种petal apiculus usually present.花瓣细尖的通常宿存。