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Journal Article

Distribution and Variation of Dion Edule (Zamiaceae)

Paolo de Luca, Sergio Sabato and Mario Vázquez Torres
Brittonia
Vol. 34, No. 3 (Jul. - Sep., 1982), pp. 355-362
Published by: Springer on behalf of the New York Botanical Garden Press
Stable URL: http://www.jstor.org/stable/2806710
Page Count: 8

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Topics: Marinas, Canyons, Biological taxonomies, Forest habitats, Deciduous forests, Haciendas, Leaves
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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.
Distribution and Variation of Dion Edule (Zamiaceae)
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Abstract

Dion edule is distributed through the Sierra Madre Orientral from Veracruz to Nuevo León and in disjunct stations in Tamaulipas. The most significant variation consists in the reduction of leaflet width from the south northwards. On this basis, two varieties are recognized: D. edule var. edule, characterized by wide leaflets and a distribution in Veracruz, Hidalgo, Queretaro, San Luis Potosi and southern Tamaulipas, and D. edule var. angustifolium, with narrow leaflets and a distribution in central-northern Tamaulipas and Nuevo León.

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