花单生于叶腋，芳香；花被片2轮，6片，外轮的倒卵状椭圆形，长约3厘米，内轮的稍狭；雄蕊多数，长1.7-2厘米。

• Flowers fragrant, solitary and axillary; tepals 6, in 2 whorls, the outer 3 obovate-elliptic, ca. 3 cm long, the inner 3 narrower; stamens many, 1.7-2 cm long.