Hoffmannia uxpanapense (Rubiaceae), una nueva especie del sur de Veracruz y Oaxaca, México

[摘要] Background and Aims:The revision of herbarium specimens ofHoffmannia(Rubiaceae) and the extensive exploration by the authors has resulted in the discovery of new species within this genus.Hoffmannia uxpanapenseCast.-Campos and Bautista-Bello is described and illustrated as a new species of the Rubiaceae family from southern Mexico, collected in the evergreen tropical forest of Uxpanapa in Veracruz and Oaxaca. Methods:The specimens of the genusHoffmanniaof the state of Veracruz were studied, a matrix of morphological data was elaborated, and a cluster analysis was carried out to differentiate the species and to detect their similarities. Key results:The specimens identified as “ H. wendtii ” presented different morphological characters to the species already described in this genus. As this name has not been published, it was considered as a new species that still needs to be formally described. This species shows similarities withH. cuneatissima, H. minuticarpaandH. arqueonervosa . Nevertheless,H. uxpanapensediffers by being a climbing shrub, with larger internodes on the stem, larger inflorescences and a greater number of white flowers per inflorescence. Conclusions: Hoffmannia uxpanapensebelongs to a group of endemic species of Mexico ( H. cuneatissima ,H. minuticarpaandH. arqueonervosa ), and this new taxon is considered as endemic of the southern zone of Veracruz and Oaxaca.

[学科分类] 植物学

[关键词] arbusto trepador;especie endémica;Hoffmannia arqueonervosa;Hoffmannia cuneatissima;Hoffmannia minuticarpa