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

花瓣白色，倒卵或近圆，基部楔，刻的小的弯曲的小裂片，小伞花序的外部花瓣在放大(辐射状)。