Botanical novelties from the Sierra de Maigualida, southern Venezuela IIIrevision and two new species of the genus "Ilex (Aquifoliaceae)"

  1. Grande Allende, José Ramón
Journal:
Anales del Jardín Botánico de Madrid

ISSN: 0211-1322

Year of publication: 2019

Volume: 76

Issue: 1

Type: Article

DOI: 10.3989/AJBM.2507 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

More publications in: Anales del Jardín Botánico de Madrid

Abstract

The Sierra de Maigualida is a poorly explored mountain range in the central Guayana Shield with high levels of endemism. In the present installment, this area is further delimited and mapped, toponymy is reviewed, and the genus Ilex L. is locally reviewed, with two species, namely I. huberi J.R.Grande sp. nov. and I. maigualidensis J.R.Grande sp. nov., described as new to science. Ilex huberi sp. nov. can be distinguished by its leaf blades strongly revolute, mucronate, and with obscure secondary venation, simple dichasia, and depressed-lunate sepals; I. maigualidensis sp. nov. by its dull leaves, flowers with undeveloped styles, and capitate-subcoronate stigmata. Stem buds and cataphylls are proposed as useful characters in species delimitation within the genus, while I. magnifructa Edwin is illustrated for the first time. A key is presented to differentiate all the species of Ilex of the Sierra de Maigualida.

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Funding information

Author is grateful to the staff of the MY, MYF, and VEN herbaria for permit access, and Stephen Tillett (MYF) for reviewing the English. Charles Brewer-Car?as (Caracas) provided a high resolution image of the map of Louis de Surville, and V?ctor Quintero (Universidad de Los Andes, M?rida) gave his assistance in the final edition of the map of the figure 1. While writing this article, the friend and colleague Bruno Manara (Caracas, 1939-2018), who draw the three line-drawings here published and reviewed the Latin diagnoses, deceased. This work is dedicated, with love and admiration, to him.

Funders

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