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BERBERIS PIMANA (BERBERIDACEAE): A NEW SPECIES FROM NORTHWESTERN MEXICO

Joseph E. Laferrière and Jorge S. Marroquín
Madroño
Vol. 37, No. 4 (OCTOBER-DECEMBER 1990), pp. 283-288
Stable URL: http://www.jstor.org/stable/41424823
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
BERBERIS PIMANA (BERBERIDACEAE): A NEW SPECIES FROM NORTHWESTERN MEXICO
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Abstract

Berberis pimana is described as a new species from the Sierra Madre Occidental, Chihuahua, Mexico. The species appears related to members of Sect. Horridae but is distinguished from other members of this section by its yellow to reddish seeds, shorter and thinner spines, and lack of hypodermal leaf layer. A new combination, Berberis muelleri, is published for the species previously known as Mahonia muelleri. Berberís pimana se describe como nueva especie de la Sierra Madre Occidental, Chihuahua, México. La especie parece emparentada con miembros de la Sección Horridae pero se distingue de las especies de esta sección por sus semillas amarillas o rojas, sus espinas más cortas y más delgadas, y por su ausencia de estrato hipodérmico en la hoja. Una nueva combinación, Berberís muelleri, se propone para la especie anteriormente conocido como Mahonia muelleri.

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