Calyptra
From Freepedia
In bryophytes, the calyptra is a cap of gametophyte tissue that protects the sporangium. This cap is lost when the sporanium capsule is mature and ready to release the spores.
In bryophytes, the calyptra is a cap of gametophyte tissue that protects the sporangium. This cap is lost when the sporanium capsule is mature and ready to release the spores.
