芽鳞通常落叶。花冠白色，或黄色到粉红色，到粉红色；子房无腺体。
Bud scales usually deciduous. Corolla white, or yellow blushed to pink, to pink; ovary eglandular.
有子房的其子房又有畸形和正常两类。无子房的两性花不能形成果实；
The hermaphrodite flowers with deformity germen could pollinate and fecundate normally and form fruits with deformity.
两性花分无子房和有子房两类；
The hermaphrodite flowers without germen couldn't form fruits.
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