Outside of the principal distribution and major diversification of Macrocarpaea in the Andes, smaller groups of species are found in the Greater Antilles of the Caribbean, Mesoamerica, the Guayana Highlands, and montane Atlantic forests of Brazil. Here, a complete revision of the genus in the latter region is presented recognizing eight species that correspond to the entirety of Macrocarpaea sect. Tabacifoliae: M atlantica J.R. Grant & V. Trunz, sp. nov., M. dolichophylla J.R. Grant & V. Trunz, sp. nov., M. glaziovii Gilg, M. illecebrosa J.R. Grant, M. inesiae J.R. Grant & V. Trunz, sp. nov., M. obtusifolia (Griseb.) Gilg, M. orbiculata J.R. Grant & V. Trunz, sp. nov., and M. rubra Malme. These species occur primarily in humid coastal montane rainforests (Mata Atlântica), and two species also occur in campos rupestre montane savannas.
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Vol. 16 • No. 2