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In [[botany]], a '''staminode''' is an often rudimentary, sterile or abortive [[stamen]]. This means that it does not produce [[pollen]]. Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla. |
In [[botany]], a '''staminode''' is an often rudimentary, sterile or abortive [[stamen]]. This means that it does not produce [[pollen]]. Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla. |
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[[Image:Staminode 1509.JPG|thumb|right|250px|The red arrow points to the hairy staminode of a Grinnell's Penstemon (''Penstemon grinellii'') flower]] |
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Sometimes, the staminodes are modified to produce [[nectar]], as in the Witch Hazel ''([[Hamamelis]])''. |
Sometimes, the staminodes are modified to produce [[nectar]], as in the Witch Hazel ''([[Hamamelis]])''. |
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Revision as of 16:17, 26 September 2011
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In botany, a staminode is an often rudimentary, sterile or abortive stamen. This means that it does not produce pollen. Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla.
Sometimes, the staminodes are modified to produce nectar, as in the Witch Hazel (Hamamelis).
Staminodes can be a critical characteristic for differentiating between species, for instance in the orchid genus Paphiopedilum, and among the penstemons.
In the case of Cannas the petals are inconsequential and the staminodes are refined into eye-catching petal-like replacements.