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

药副冠小裂片凹缺，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，对生于被片，裂片凹缺，小裂片凹缺，或副冠裂片，背，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，具缺刻具小弯曲小裂片，小伞形序外部瓣放大(辐射状)。