Botany: General

A Dictionary of Plant Sciences A Dictionary of Biology Further reading

calyptra

A Dictionary of Plant Sciences | 1998 | | Copyright

calyptra A protective cap- or hood-like covering on the developing capsule in a moss or liverwort. In mosses the calyptra usually remains until the capsule is almost ripe, when it usually falls. In liverworts the calyptra covers the capsule only very early in its development; later it may be visible as a collar at the base of the stalk.

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MICHAEL ALLABY. "calyptra." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 12 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "calyptra." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 12, 2012). http://www.encyclopedia.com/doc/1O7-calyptra.html

MICHAEL ALLABY. "calyptra." A Dictionary of Plant Sciences. 1998. Retrieved February 12, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-calyptra.html

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calyptra

A Dictionary of Biology | 2004 | Copyright

calyptra
1. A layer of cells that covers the developing sporophyte of mosses, liverworts, clubmosses, horsetails, and ferns. In mosses it forms a hood over the capsule and in liverworts it forms a sheath at the base of the capsule stalk.

2. See root cap.

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"calyptra." A Dictionary of Biology. 2004. Encyclopedia.com. (February 12, 2012). http://www.encyclopedia.com/doc/1O6-calyptra.html

"calyptra." A Dictionary of Biology. 2004. Retrieved February 12, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-calyptra.html

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