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Revista mexicana de biodiversidad
On-line version ISSN 2007-8706Print version ISSN 1870-3453
Abstract
ARIAS, Salvador and TERRAZAS, Teresa. xPachebergia (Cactaceae), a nothogenus from western Mexico. Rev. Mex. Biodiv. [online]. 2008, vol.79, n.1, pp.23-28. ISSN 2007-8706.
xPachebergia (Backebergia x Pachycereus), a new nothogenus from western Mexico, is proposed. Stem and seed morphology of this poorly known taxon from dry to very dry deciduous tropical forest in the Balsas River Basin, Guerrero, are described and illustrated. Its diagnostic morphological characters and relationships with Pachycereus pecten-aboriginum and Backebergia militaris, its putative parental taxa, are discussed.
Keywords : Backebergia; Balsas River Basin; hybrid; new nothogenus; Pachycereus.