polypetalous

形容词 polypetalous:

1. having a corolla composed of many separated or distinct petals

pol.y.pet.al.ous

adj.（形容词）
Having separate petals, as on the corolla of a rose or carnation.
离瓣的：具有分离花瓣的，如玫瑰或康乃馨花冠上的花瓣