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A review of research on the cycad genus Ceratozamia Brongn. (Zamiaceae) in Mexico
Journal Article
đź“–
Vovides AP, Gónzalez D, Pérez-Farrera MA, Avendaño S, Bárcenas C. 2004. A review of research on the cycad genus Ceratozamia Brongn. (Zamiaceae) in Mexico. Taxon 53
(2): 291-297.
https://doi.org/10.2307/4135609.
Abstract
The genus Ceratozamia contains more than 20 species distributed in eastern and southern Mexico, with extensions into Central America. Morphology, anatomy, and molecular (ITS) data allow resolution of some aspects of species relationships, provide correlations with ecology, and suggest phytogeographic hypotheses. Some species complexes, such as those centered around C. norstogii and C. miqueliana, are restricted to southernwest
Mexico, in what are regarded as Pleistocene floristic refugia. The low level of divergence of ITS sequences among taxa to the north of the Trans-Mexican Neovolcanic mountain range suggests a pattern of recent, and perhaps rapid, speciation.
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