Sect. Basiplacentum Chang et Yan (Pittosporaceae)
组2. 基生胎座组——Sect. II, Basiplacentum Chang et Yan
名称文献：Bivalvatae Gowda
形态特征：蒴果2片裂开，果片内面有横隔，胎座位于果片基部或下半部，互相连接；花序伞形或圆锥状。▽Capsulae 2-valvatae, valvis intus trabeculatis; placentae ad basin vel dimidium inferiorem valvarum dispositae, contigae; inflorescentiae umbellatae vel paniculatae.