introrse

1.Anthers sessile, circular, 2-loculed, introrse, connate into a synandrium, dehiscence longitudinal.

无梗，圆，2室，内向，合生的成为聚，开裂纵向。

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

6，对生于被片，附在裂片凹缺，小裂片凹缺，或副冠裂片先端的，背，内向。