Abstract
Abstract Denk T., Grimm G. W. & Roseler A.-K.: When field botany meets history: taxonomy of Platanus mexicana in Mexico. — Willdenowia 42: 99-115. June 2012. — Online ISSN 1868-6397; © 2012 BGBM Berlin-Dahlem. Stable URL: http://dx.doi.org/10.3372/wi.42.42113 The recently described Platanus mexicana var. interior of Nixon & J. M. Poole is critically evaluated. We show that the type of the name P. mexicana, collected by Berlandier in 1827, is virtually identical to morphotypes typically found within the range of P. mexicana var. interior. The reason for the taxonomic confusion is twofold: the variability of the abaxial leaf tomentum across the distribution range of P. mexicana and uncertainties concerning the type locality of P. mexicana. Field observations at the type locality of P. mexicana var. interior and throughout the range of P. mexicana show that the morphotype represented by the holotype is rarely found in the main distribution range of P. mexicana in Veracruz, Puebla, Oaxaca and Chiapas. Our fin...
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