Journal
SYSTEMATIC BOTANY
Volume 39, Issue 1, Pages 260-267Publisher
AMER SOC PLANT TAXONOMISTS
DOI: 10.1600/036364414X678224
Keywords
Bombacaceae; Caatinga; ITS; phylogeny; taxonomy
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Funding
- Graduate Program in Botany (PPGBot/UEFS) and FAPESB [APP0006/2011]
- doctoral fellowships from the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [BEX 5415/13-6]
- doctorate fellowships from the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
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Pachira (Malvaceae: Bombacoideae) is distributed predominantly in northern South America and is the largest genus in the subfamily, including about 50 species. Ongoing studies of the systematics of neotropical Bombacoideae and field work in northeastern Brazil led to the discovery of a new species, herein described and illustrated. Pachira moreirae is known from a single population that is endemic to caatinga vegetation (a type of seasonally dry tropical forest) in the state of Bahia. The new species is leafless during its flowering period, a condition commonly seen in some genera of Bombacoideae but rare in Pachira, a genus that mostly comprises evergreen species. We provide a description of the morphology of this new species and notes on its distribution, phenology, and conservation status. A phylogenetic analysis using ITS data shows that P. moreirae is a member of a Brazilian extra-Amazonian clade of Pachira that also includes P. glabra and P. refuse.
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