Filaments opposite sepals without a gland at base or gland not obvious; seeds oblate or reniform, glabrous or with small, raised tubercles, or flat but margin with a narrow wing.

• 花丝与萼片对生没有不明显一腺体在基部或腺体；种子扁球形或肾形的，无毛或具小的，凸起小瘤，或平但是边缘具一狭窄翅。(72