sessile

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

花药无梗，圆，2室，内，的成为聚药，开裂纵。

Pistil sessile or on a long gynophore.

在长时期雌蕊柄的雌蕊无梗或。

In scyphozoan jellyfish, the free-swimming medusa form is the dominant stage, with the sessile polyp form found only during larval development.

自由游泳的水母见于各海洋，包括常见的沿海岸线漂流的盘形动(如甲壳动)。