a cap-like or lid-like covering of certain fruits or flowers that comes off in one piece. E.g. the perianth forms a calyptra which comes off when a Eucalyptus flower opens.
Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-23
Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A.(2023). Flora of Zambia: Glossary details: calyptra. https://www.zambiaflora.com/speciesdata/glossary-display.php?glossary_id=98, retrieved 5 October 2023
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