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Distribution and Variation of Dion Edule (Zamiaceae)
Paolo de Luca, Sergio Sabato and Mario Vázquez Torres
Vol. 34, No. 3 (Jul. - Sep., 1982), pp. 355-362
Stable URL: http://www.jstor.org/stable/2806710
Page Count: 8
You can always find the topics here!Topics: Marinas, Canyons, Biological taxonomies, Forest habitats, Deciduous forests, Haciendas, Leaves
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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.
Brittonia © 1982 New York Botanical Garden Press