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Acta botánica mexicana
On-line version ISSN 2448-7589Print version ISSN 0187-7151
Abstract
PEREZ-CALIX, Emmanuel; GARCIA RUIZ, Ignacio and CHAZARO BASANEZ, Miguel. A new specie of Pachyphytum (Crassulaceae) for the flora of Jalisco, Mexico. Act. Bot. Mex [online]. 2008, n.83, pp.63-68. ISSN 2448-7589.
Pachyphytum contrerasii (Crassulaceae) is proposed and described here as a new species from central Jalisco, western Mexico. This taxon belongs to the section Pachyphytum Moran, on account of its imbricate bracts of the young cincinnus, of its corolla shorter than the calyx and of its the conspicuous red dot on the inner face of the corolla segments. In terms of morphology and geography the closest relative is Pachyphytum machucae I. Garcia, Glass & Cházaro, from northwestern Michoacan, In addition to its geographical distribution, Pachyphytum contrerasii is separated from this species by the possession of pedicels 2-4 mm long, a corolla 3 mm long that is shorter than the pair of larger sepals, and bicolored inner face of the petals, stamens and pistil. Besides being a new species this is the first report of the genus Pachyphytum for Jalisco state.
Keywords : clado Acre; Echeverioideae; Pachyphytum machucae; taxonomy.