corolla

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

蕊4，花冠筒，稍外露二强蕊，着生在中部。

2.Shrubs evergreen or sometimes semievergreen; branchlets and pedicels not setose. Leaf blade adaxially glabrous; corolla creamy yellow, lined and flushed rose on outside. Fl. May–Jun.

有时常绿灌木或半常绿；小枝和花梗不具刚毛。叶片正无毛；在外花冠米黄色，线形和带玫瑰色；花期5月6月。