Anthers coherent, thecae confluent at apex; capsule linear to narrowly ovoid, ellipsoid, or oblong; leaf blade base attenuate to cordate, rarely auriculate or auriculate-peltate.

• 连着的花药，囊汇合的在先端；蒴果线形到狭卵球形，椭圆形，或长圆形；叶片基部渐狭到心形，很少耳形或盾形。(59