Peterson Paul M, Romaschenko Konstantin, Soreng Robert J, Valdés Reyna Jesus
Department of Botany MRC-166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA National Museum of Natural History, Smithsonian Institution Washington United States of America.
Departamento de Botánica, Universidad Autónoma Agraria Antonio Narro, Saltillo, C.P. 25315, México Universidad Autónoma Agraria Antonio Narro Saltillo Mexico.
PhytoKeys. 2020 Jan 27;139:21-28. doi: 10.3897/phytokeys.139.47373. eCollection 2020.
, is described and illustrated. The new species was found growing on calcareous rocky slopes and hillsides between 1700-2721 m in Coahuila, Nuevo León, San Luis Potosí, and Tamaulipas. The new species is morphologically similar to but differs in having ligules (2-) 4.5-8.5 mm long with acute to narrowly acute and lacerate apices and florets with a sharp-pointed callus. In addition, we include a key to the species of in northeastern México.
对……进行了描述和说明。新物种发现于科阿韦拉、新莱昂、圣路易斯波托西和塔毛利帕斯州海拔1700 - 2721米的钙质岩石斜坡和山坡上。新物种在形态上与……相似，但不同之处在于其叶舌长（2 -）4.5 - 8.5毫米，先端锐尖至狭锐尖且撕裂状，小花具尖锐的胼胝体。此外，我们还提供了墨西哥东北部……物种的检索表。
