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involucre

A Dictionary of Biology | 2004 | Copyright

involucre A protective structure in some flowering plants and bryophytes. In flowering plants it consists of a ring of bracts arising beneath the flower cluster of those species with a capitulum (i.e. members of the dandelion family) or an umbel (i.e. members of the carrot family). In mosses and liverworts the involucre is a projection of tissue from the thallus that arches over the developing archegonium.

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involucre

The Concise Oxford Dictionary of English Etymology | 1996 | | Copyright

involucre envelope XVI; (bot.) whorl of bracts XVIII. — F. involucre or L. involūcrum, f. involvere INVOLVE.

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T. F. HOAD. "involucre." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

T. F. HOAD. "involucre." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O27-involucre.html

T. F. HOAD. "involucre." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-involucre.html

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involucre

A Dictionary of Plant Sciences | 1998 | | Copyright

involucre A whorl of bracts below an inflorescence.

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MICHAEL ALLABY. "involucre." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

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

MICHAEL ALLABY. "involucre." A Dictionary of Plant Sciences. 1998. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-involucre.html

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