Brittonia

, 63:203 | Cite as

Agave turneri (Agavaceae), a new species from northeastern Baja California, Mexico

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Abstract

Agave turneri, a new species of Agave from the Sierras Cucapá and El Mayor in northeastern Baja California, Mexico, is a medium-sized species that does not produce offsets, has a relatively short and narrow panicle, and has a distinctive flower structure. The closest relatives to this new species are Agave moranii, which occurs approximately 200 km to the south of the type locality, and A. deserti var. simplex, which occurs in Arizona and California. This new species is a narrow endemic restricted to specific granodiorite and tonalite habitats in a hyperarid environment. Agave turneri appears to be a critically endangered owing to its habitat preference for specific types of granite in the Sierra Cucapá, threats due to prolonged drought and global change, and its close proximity to the Mexicali metropolitan area.

Key Words

Agave Agavaceae Baja California hyperarid desert endemic 

Resumen

Se describe una nueva especie de agave, Agave turneri. La planta es de tamaño mediano, no produce hijuelos y su inflorescencia es relativamente corta y angosta. Sus parientes más cercanos son Agave moranii, que está presente a unos 200 km hacia el sur de la localidad tipo y A. deserti var. simplex, que se distribuye en Arizona y California. La especie es endémica y restringida al noreste de Baja California, México, donde ocurre sobre granodiorita y tonalita de hábitats hiperáridos en las Sierras Cucapá y El Mayor. Agave turneri parece estar en un estatus de conservación de peligro de extinción, debido a su ámbito y hábitat tan restringidos, las sequías prolongadas y el cambio global, y por su cercanía al área metropolitana de Mexicali.

Literature Cited

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Copyright information

© The New York Botanical Garden 2010

Authors and Affiliations

  1. 1.U.S. Geological SurveyTucsonU.S.A.
  2. 2.Departamento de Biología de la ConservaciónCentro de Investigación Científica y de Educación Superior de EnsenadaEnsenadaMéxico

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