Authors: José Jesús Sánchez-Escalante, Thomas R. Van Devender, Ana Lilia Reina-Guerrero
Abstract:

The Sierra La Púrica is a Sky Island mountain range north-northwest of Nacozari de García (municipality of the same name), Sonora, Mexico. It is part of the Ajos-Bavispe Área de Protección de Flora y Fauna in the Comisión Nacional de Áreas Naturales Protegidas. The east side of the Sierra La Púrica drains into the Río Cabullona, an upper tributary of the Río Bavispe-Yaqui drainage. The western slopes drain into the Río Sonora. The Madrean Archipelago Biodiversity Assessment (MABA) Expedition Sierra La Púrica was in July and September 2013. A total of 945 records of observations and specimens are available in the Arizona State University, Madrean Archipelago Biodiversity Assessment, Universidad de Sonora, and University of Arizona databases. A total of 306 plant taxa in 71 families were recorded. Dominant families are Asteraceae (43 taxa), Fabaceae (32 taxa), and Poaceae (49 taxa + 12 non-native). Fourteen species (4.5%) are non-native. The vegetation is desert grassland, oak woodland, and pine-oak forest. Noteworthy species include Zigadenus virescens, Bouteloua eludens, Helianthella quinquenervis, Hosackia alamosana, Mandevilla foliosa, Piptochaetium pringlei, Populus tremuloides, Quercus gambelii, and Stevia puricana. Species protected in NOM 059, the Mexican endangered species law, include Amoreuxia palmatifida (Protegida), Zigadenus virescens (Protegida), and Juglans major (Amenazada). Stevia puricana described by Billie L. Turner in 2015 is only known from the Sierra La Púrica.

Notes: Preparado por José Jesús Sánchez Escalante; Herbario de la Universidad de Sonora. Hermosillo, Sonora, México.

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Families: 71
Genera: 215
Species: 304
Total Taxa (details): 306