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A PREVIOUSLY UNRECOGNIZED SPECIES OF SENEGALIA (FABACEAE) FROM NORTHEASTERN BRAZIL

David S. Seigler, John E. Ebinger and Petala Gomes Ribeiro
Journal of the Botanical Research Institute of Texas
Vol. 6, No. 2 (23 NOVEMBER 2012), pp. 397-401
Stable URL: http://www.jstor.org/stable/41972428
Page Count: 5
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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.
A PREVIOUSLY UNRECOGNIZED SPECIES OF SENEGALIA (FABACEAE) FROM NORTHEASTERN BRAZIL
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Abstract

During the course of our work on the genus Senegalia Raf. of Brazil, we encountered a collection [M. Blanchet 2772 (F, GH, K)] that Bentham (1842) cited first under Acacia velutina DC. and subsequently (1875,1876) as Acacia monacantha Willd. Until now this collection has mostly been accepted under the latter name. However, as more specimens have become available, it is clear that they represent a hitherto undescribed species that is distinct from both Senegalia monacantha (Willd.) Seigler & Ebinger (syn. Acacia monacantha) and Senegalia velutina (DC.) Seigler & Ebinger (Acacia velutina). It is here described and illustrated as Senegalia paganuccii Seigler, Ebinger, & Ribeiro and compared to its probable nearest relative Senegalia tenuifolia (L.) Britton & Rose. The new species is endemic in Brazil where it occurs in the states of Bahia, Minas Gérais, and Piauí, Brazil. En el progreso de nuestro estudio sobre el género Senegalia de Brasil se encontró que unos ejemplares M. Blanchet 2772 (F, GH, K) que fueron citados por Bentham como Acacia velutina DC. (1842) (Senegalia velutina (DC.) Seigler & Ebinger) y después (1875, 1876) como Acacia monacantha Willd. (Senegalia monacantha (Willd.) Seigler & Ebinger). Aunque la mayoría de los materiales han sido aceptados como tal, no obstante con una mayor disponibilidad de colecciones se puede clarificar que las características de estos materiales son distintas y que corresponden a una nueva especie. Ejemplares de este taxon obtenidos en los estados de Bahía, Minas Gérais y Piaui, Brasil, se describen aquí como Senegalia paganuccii Seigler, Ebinger, & Ribeiro, y son comparados con la especie más afín Senegalia tenuifolia (L) Britton & Rose.

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