calyptra

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English[edit]

Noun[edit]

calyptra (plural calyptras or calyptrae)

  1. (botany) In bryophytes, a thin, hood-like tissue that forms from the archegonium and covers the developing sporophyte.
    • 1992, Rudolf M. Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, page 4
      (b) sporophyte with foot reduced, the entire sporophyte enveloped by the calyptra, which is ± stipitate at the base.

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