stamen

Stamens 5 to many, adnate with perigone.

5很多，贴生于。

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

4，冠筒，稍外露二强，着生在中部。

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

5多数，离生或着生于筒部。

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

具有发育不完全之雌；两性之虽然正常发育，但丝不伸长且药不开裂。