小裂片

Anthers attached at corona lobelet sinus, ovoid, ca. 2 mm.

药附着在冠凹缺，卵球形，约2毫米。

Anthers 6, opposite perianth segments, attached at lobe sinus, lobelet sinus, or lobe apex of corona, dorsifixed, introrse.

药6，对生于被，附着在凹缺，凹缺，或冠先端，背着，内向。

Petals white, obovate or subround, base cuneate, apex notched with small incurved lobule, outer petals in umbellule sometimes enlarged (radiant).

瓣白色，倒卵形或近圆形，基部楔形，先端具缺刻具弯曲，伞形序外部瓣在放大(辐射状)。