Abstract. Erythroxylum nordestinum, a new species of Erythroxylum sect. Rhabdophyllum, is described and illustrated. It occurs in the semiarid region of Bahia, Pernambuco, and Sergipe states of northeastern Brazil. It is recognized by striate stipules that are longer than the petiole, subsessile flowers with the calyx lobes narrowly triangular and longer than the staminal cup, and a terete endocarp. Affinities of E. nordestinum with other species of E. sect. Rhabdophyllum are discussed, and a key is presented to the similar species of Erythroxylum with subsessile flowers from the semiarid region of Brazil.
Resumo. Erythroxylum nordestinum, uma nova espécie de Erythroxylum pertencente à seção Rhabdophyllum, é descrita e ilustrada. Ocorre no semiárido nos estados da Bahia, Pernambuco e Sergipe, na Região Nordeste do Brasil. Apresenta como caracteres diagnósticos as estípulas estriadas e maiores que o pecíolo, flores subsésseis, com lobos do cálice estreitamente triangulares e maiores que o tubo estaminal e endocarpo com secção transversal cilíndrica. A afinidade desta espécie com outras espécies de E. sect. Rhabdophyllum é discutida e apresentada uma chave para identificação das espécies de Erythroxylum com flores subsésseis do semiárido do Brasil.
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The authors thank the curators of the herbaria visited, M.Sc. Jefferson R. Maciel for preparing the distribution map, Regina Carvalho for drawing the illustrations, and two anonymous reviewers for their comments and suggestions on the manuscript.
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da Costa-Lima, J.L., Loiola, M.I.B. & Alves, M. A new species of Erythroxylum (Erythroxylaceae) from northeastern Brazil. Brittonia 66, 60–64 (2014). https://doi.org/10.1007/s12228-013-9309-x
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DOI: https://doi.org/10.1007/s12228-013-9309-x