n.鳃盖；藓盖；果盖
A flaplike covering, such as an operculum. 片状盖，例如蒴盖
The shell rim joining the operculum was thick and prominent. 看不出虫龄间的皮棘差异。
Capsules dehiscent by an operculum slightly distal to middle. 通过一个盖稍上部至中部开裂的蒴果。
If you do, and must return your good wishes and happy operculum laugh! 如果你做到了，回报你的一定是美好的祝愿，幸福的笑厣！
Micropylar collar and the undeveloped forms of operculum were differentiated at the micropylar region. 珠孔区有珠孔领和孔盖的分化，但珠孔领分化不完善。
