unisexual

1.Flowers radially symmetric, bisexual or unisexual, hypogynous, perigynous, or epigynous;

开花辐射对称，单性两性或，，周，或；

2.(两性，株植株，花两性花株或很少)单性花两性或，性不相等5瓣；

Inflorescences corymbiform-umbellate, many flowered, bracteate.Flowers bisexual or unisexual (plants hermaphroditic, dioecious, or rarely gynodioecious), male ones unequally 5-merous;