OXFORD 9000
📚 noun • entry_id 53460

calyptra

Meanings (ES + gloss)
caliptra
In bryophytes, a thin hood of tissue that forms from the archegonium and covers the developing sporophyte and is shed as it ripens.
(b) sporophyte with foot reduced, the entire sporophyte enveloped by the calyptra, which is ± stipitate at the base.
Word forms