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Stigma Morphology in the Leguminosae: The Wet, Papillate (WP) Stigma in Caesalpinioideae

S. J. Owens and G. P. Lewis
Kew Bulletin
Vol. 51, No. 1 (1996), pp. 119-131
Published by: Springer on behalf of Royal Botanic Gardens, Kew
DOI: 10.2307/4118749
Stable URL: http://www.jstor.org/stable/4118749
Page Count: 13
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Stigma Morphology in the Leguminosae: The Wet, Papillate (WP) Stigma in Caesalpinioideae
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Abstract

The stigmas of 65 species from 32 genera representing all tribes in the subfamily Caesalpinioideae have been studied using light and electron microscopy. Stigmas differ greatly in size but all are papillate. The number, size, and morphology of papillae is variable both between genera and species. Two types of stigma have now been recorded in Caesalpinioideae, wet papillate and wet, non-papillate, and these morphological characters may help in classification. All stigmas examined from freshly collected and unfixed flowers were wet, the secretion accumulating in the interstices between papillae and sometimes flooding the stigma surface. The secretion is heterogeneous containing protein, lipid and carbohydrate.

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