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Issue: Vol. 663 No. 4: 27 Aug. 2024
Type: Article
Published: 2024-08-27
DOI: 10.11646/phytotaxa.663.4.5
Page range: 231-239
Abstract views: 206
PDF downloaded: 20

Colubrina limae (Rhamnaceae), a new species from seasonally dry tropical forests of Brazil

Universidade de Brasília, Programa de Pós-graduação em Botânica, Instituto de Ciências Biológicas (IB), Campus Darcy Ribeiro, Departamento de Botânica, CEP 70919-970, Brasília, Distrito Federal, Brazil
Universidade de Brasília, Programa de Pós-graduação em Botânica, Instituto de Ciências Biológicas (IB), Campus Darcy Ribeiro, Departamento de Botânica, CEP 70919-970, Brasília, Distrito Federal, Brazil
Universidade Federal da Paraíba, Departamento de Sistemática e Ecologia, CEP 58051-900, João Pessoa, Paraíba, Brazil
Programa de Pós-Graduação em Botânica, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Feira de Santana, Bahia, Brazil
Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, CEP 70770-917, Brasília, DF, Brazil
Caatinga Cerrado dry forest ecotone endemism Cavernas do Peruaçu National Park Rosales savanna taxonomy ziziphoid group Eudicots

Abstract

Colubrina limae (Rhamnaceae, Ziziphoid group, subgen. Colubrina, sect. Cowania) is described and illustrated as a new species. We provide information on its geographical distribution, habitat, phenology, and conservation status. A table with key morphological characters comparing C. limae with all Brazilian species of Colubrina and one similar species in section Cowania is provided. C. limae differs remarkably from its congeners by the presence of stipitate glands on the abaxial side of leaves, brochidodromous venation, inflorescences in fascicles, and longer (>25 mm) fruit pedicels. It does have some morphological similarities with C. elliptica, a species from Central and northern South America. The new species is found mainly in the understory of seasonally dry forests associated with limestone outcrops; only two populations are recorded in the municipality of Januária in Minas Gerais state, Brazil.

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