Stamens 5 to many, adnate with perigone.

雄5到很多，贴生于被。

Stamens 4, didynamous, inserted at middle of corolla tube, slightly exserted.

雄4，筒，稍外露的二强雄，生的在中部。

Stamens 5 to numerous, free or inserted in perigone tube.

雄5到多数，离生或生于被筒部。

Then five petal primordia arised simultaneously in a whorl arrangement, followed by eight stamen primodia arised and last by pistil primodium.

雄具有发育不完全之雌；两性之雄正常发育，但丝不伸长且药不开裂。