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Updated live from Wikipedia, last check: May 30, 2012 15:49 UTC (48 seconds ago)

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calyptra of tortula moss Tortula muralis
For the genus of moth, see Calyptra (genus).

In bryophytes, the calyptra (plural calyptrae) is an enlarged archegonia venter that protects the capsule containing the embryonic sporophyte. The calyptra is usually lost before the spores are released from the capsule. The shape of the calyptra can be used for identification purposes.[1]

In flowering plants, the calyptra is a covering tissue for stamens and carpels. The name is also used for the capping tissue of roots.

References

  1. ^ Malcolm; Malcolm, Bill; Nancy (2006), Mosses and other Bryophytes, an Illustrated Glossary, Micro-Optics Press, p. 65, ISBN 0958222479  

Wikispecies

Up to date as of January 23, 2010

From Wikispecies

Calyptra may mean:








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