Revisión taxonómica y distribución geográfica de Ephedra (Ephedraceae) en México

[摘要] This research seeks to determine the number of species ofEphedrain Mexico and their distributions in the national territory. Eight species ofEphedraare distributed in North and Central Mexico:Ephedra antisyphilitica ,E. aspera ,E. californica ,E. compacta ,E. nevadensis ,E. pedunculata, E. torreyanaandE. trifurca .Ephedra compactais the only species endemic to Mexico and the one with the most widely distribution over the country. A key, descriptions for each of the species, and distribution maps are presented.Ephedraspecies are found between 0 and 2800 m above sea level, mostly in xerophytic scrublands, grasslands, and thorn forests.

[学科分类] 植物学

[关键词] distribución geográfica;Ephedra;México;taxonomía