Distribution and variation of Dion edule (Zamiaceae)

Distribution and variation of Dion edule (Zamiaceae)

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, char...

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Veröffentlicht in:Brittonia 1982-07, Vol.34 (3), p.355-362
Hauptverfasser: De Luca, P, Sabato, S, Vazquez Torres, M
Format: Artikel
Sprache:eng
Schlagworte:
Biological taxonomies
Canyons
Deciduous forests
Forest habitats
Haciendas
Leaves
Zamiaceae
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Beschreibung
Zusammenfassung: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.
ISSN:0007-196X
1938-436X
DOI:10.2307/2806710