Inflorescences racemelike, thyrsoid, catkinlike, or 1-flowered; flowers 5(or 6)-merous; stems terete; fruit 3-5 cm.

• 花序总状，聚伞圆锥状，柔荑花序状或者单花；花6(或者5)数；茎圆柱状果3-5厘米(6