subround
1. Petals white, obovate or subround, base cuneate, apex notched with small incurved lobule, outer petals in umbellule sometimes enlarged (radiant).
花瓣白色,倒卵形或近圆形,基部楔形,先端具缺刻的具小的弯曲的小裂片,小伞形花序的外部花瓣在放大(辐射状)。