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

花瓣，卵形或近圆形，基部楔形，先具缺刻的具的弯曲的，伞形花序的外部花瓣在放大(辐射状)。