Typification of Pinus apulcensis Lindley (Pinaceae), a Misinterpreted Name for a Latin American Pine

Abstract

The Mexican taxon Pinus apulcensis Lindley is lectotypified with an ovuliferous cone found among carpological material in the herbar¬ ium of the Natural History Museum in Vienna (W), which was sent to Endlicher by Lindley.This cone confirms treatments of that name in publications on Mexican pines up to 1945-1948, when Marti¬ nez interpreted it in a different sense, using a specimen he had received from the putative type locality.The resulting confusion has been cor¬ rected, and a revised synonymy of Lindley's taxon is presented.During work being carried out to complete the monographic study of pines for Flora Neotropica started by Brian T. Styles, a problem was encoun¬ tered regarding the current interpretation of one of John Lindley's species from Mexico, Pinus apulcen¬ sis.This interpretation, commonly accepted since Martinez (1945Martinez ( , 1948)), and followed by Stead & Styles (1984) in their revision of the " pseudostrobus" group, was due to the lack of a type specimen, and was based on what may be described as the topotype method: the assumption that whatever pine grows today at the type locality must be Lin¬ dley's taxon.Lindley (1839) published two new species of pine based on collections made by C. T. Hartweg in Mexico in 1838: Pinus pseudostrobus from Angangueo ("Anganguco," Michoacdn) and P. apul¬ censis from "ravines near Apulco" (Hidalgo).(The confusion of Apulco with Acapulco seems to have originated with Endlicher (1847: 154).)The origi¬ nal descriptions of both are concise.Apart from short leaves and glaucous shoots, P. apulcensis is said to differ from P. pseudostrobus mainly in its cones, "covered closely with pyramidal elevations, which are sometimes prolonged and contracted in the middle, especially those near the points of the cones."

Typification of Pinus apulcensis Lindley (Pinaceae), a Misinterpreted Name for a Latin American Pine

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