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Issue: Vol. 496 No. 2: 12 April 2021
Type: Article
Published: 2021-04-12
DOI: 10.11646/phytotaxa.496.2.5
Page range: 159–169
Abstract views: 22
PDF downloaded: 1

Graptopetalum rosanevadoensis (Crassulaceae): A new haplostemonous species from the Nevado de Colima, Jalisco, Mexico

Herbario IBUG, Instituto de Botánica, Departamento de Botánica y Zoología, Universidad de Guadalajara, km 15.5 Guadalajara-Nogales, Las Agujas, Nextipac, Zapopan, C.P. 45110, Jalisco, México.
Departamento de Geografía y Ordenación Territorial, Centro Universitario de Ciencias Sociales y Humanidades, Universidad de Guadalajara, Av. de los Maestros y M. Bárcena s/n, Guadalajara, C.P. 44260, Jalisco, México.
Departamento de Geografía y Ordenación Territorial, Centro Universitario de Ciencias Sociales y Humanidades, Universidad de Guadalajara, Av. de los Maestros y M. Bárcena s/n, Guadalajara, C.P. 44260, Jalisco, México.
Herbario IBUG, Instituto de Botánica, Departamento de Botánica y Zoología, Universidad de Guadalajara, km 15.5 Guadalajara-Nogales, Las Agujas, Nextipac, Zapopan, C.P. 45110, Jalisco, México.
Herbario IBUG, Instituto de Botánica, Departamento de Botánica y Zoología, Universidad de Guadalajara, km 15.5 Guadalajara-Nogales, Las Agujas, Nextipac, Zapopan, C.P. 45110, Jalisco, México.
taxonomy Saxifragales Nicodemo G. Passalacqua Eudicots

Abstract

Graptopetalum rosanevadoensis (subgenus Glassia, Crassulaceae), a new haplostemonous species from Jalisco, Mexico, is described and illustrated. Its closest morphological species are G. superbum and G. pentandrum. It differs from both in having a much larger rosette with more numerous leaves and in terms of its number of branches per panicle and its stem diameter, which is intermediate between the two species. Now, subgenus Glassia includes four allopatric haplostemonous species, all confined to western-central México: G. glassii, G. pentandrum, G. rosanevadoensis and G. superbum. A key to species of Graptopetalum, subgenus Glassia is provided. According to IUCN criteria, the species was assessed as critically endangered (CR).