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10 August 2015 A New South Brazilian Species of Actinostemon (Euphorbiaceae)
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Abstract

A new species of Actinostemon is described and illustrated. Actinostemon roselii is mentioned only for the states of Paraná and Santa Catarina (Brazil), where it grows in riparian tropical rainforests. This species can be recognized by its conspicuous and depressed ovate bracts of the staminate cymule, foliar buds globoid, staminate cymule with three or four flowers, and staminate and pistillate flowers monochlamydeous. Comments about its distribution and ecology are provided, as well as a key to identify the Brazilian species of Actinostemon. Based on IUCN criteria, A. roselii can be considered a data deficient (DD) species.

© Copyright 2015 by the American Society of Plant Taxonomists
Luciana dos Santos Dias de Oliveira, André Laurênio de Melo, Marcos José da Silva, Paula Pinto Eymael, and Margareth Ferreira de Sales "A New South Brazilian Species of Actinostemon (Euphorbiaceae)," Systematic Botany 40(2), 522-526, (10 August 2015). https://doi.org/10.1600/036364415X688709
Published: 10 August 2015
JOURNAL ARTICLE
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