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stipule
stipule A leafy or linear appendage, found, usually in pairs, at or near the base of the petiole of a leaf. Stipules are often variously patent (i.e. spreading), but may be adpressed to petiole or twig. Occasionally they are amplexicaul (i.e. surrounding and clasping the twig). These uncommon positions are valuable aids to plant identification.
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MICHAEL ALLABY. "stipule." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 12 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "stipule." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 12, 2012). http://www.encyclopedia.com/doc/1O7-stipule.html MICHAEL ALLABY. "stipule." A Dictionary of Plant Sciences. 1998. Retrieved February 12, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-stipule.html |
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stipule
stipule An outgrowth from the petiole or leaf base of certain plants. Those of the garden pea are leaflike photosynthetic organs. The stipules of the lime tree are scalelike and protect the winter buds, whereas those of the false acacia (Robinia) are modified as spines.
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Cite this article
"stipule." A Dictionary of Biology. 2004. Encyclopedia.com. 12 Feb. 2012 <http://www.encyclopedia.com>. "stipule." A Dictionary of Biology. 2004. Encyclopedia.com. (February 12, 2012). http://www.encyclopedia.com/doc/1O6-stipule.html "stipule." A Dictionary of Biology. 2004. Retrieved February 12, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-stipule.html |
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