stamen

Stamens 5 to many, adnate with perigone.

蕊5到很多，贴生于花。

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

蕊5到多数，离生或着生于花筒。

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

蕊4，花冠筒，稍外露的二强蕊，着生的在。

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

花具有发育不完全之雌蕊；两性花之蕊虽然正常发育，但花丝不伸长且花药不开裂。