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Journal Article

Intrapopulational Variation in Leaflet Morphology of Zamia pumila L. in Relation to Microenvironment and Sex

Sandra J. Newell
American Journal of Botany
Vol. 72, No. 2 (Feb., 1985), pp. 217-221
Stable URL: http://www.jstor.org/stable/2443549
Page Count: 5
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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.
Intrapopulational Variation in Leaflet Morphology of Zamia pumila L. in Relation to Microenvironment and Sex
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Abstract

The cycad Zamia pumila L. was examined for differences in leaflet morphology between sun and shade plants and between males and females within a single population in northern Puerto Rico. Sun leaflets are significantly smaller than shade leaflets in length, width, and surface area; and sun leaflets have a higher length: width ratio than shade leaflets. Also, average density-thickness is greater for sun leaflets than for shade leaflets. Males and females are similar in leaflet size; but the females had a larger number of leaflets per leaf than males.

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