A new species of Adenocalymma (Bignonieae, Bignoniaceae) from Minas Gerais, Brazil
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Adenocalymma includes approximately 76 species of lianas, shrubs and treelets, representing the largest genus from the Neotropical tribe Bignonieae (Bignoniaceae). As part of ongoing taxonomic studies within the “Adenocalymma-Neojobertia” clade, we found a new species endemic to the Brazilian Atlantic forest, Adenocalymma fistulosum. The new taxon resembles A. apetiolatum, A. sessile, A. subsessilifolium, and A. tephrinocalyx on the sessile leaf insertion and shrubby habit, but differs by the indument type, branch and branchlet pith, prophyll shape, inflorescence trichomes, bract and bracteole shape and size, corolla shape and color, presence of cupular trichomes in the corolla, and position of the anthers and stigma. The new taxon is described and illustrated. In addition, a distribution map, notes on the geographic distribution, habitat and morphological variation are provided.
KeywordsAtlantic Forest endangered species taxonomy
The authors thank CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) for a postdoctoral fellowship to L.H.M.F and a Pq-1B grant to L.G.L. (310871/2017-4), ASPT (American Society of Plant Taxonomists), BSA (Botanical Society of America), and IAPT (International Association of Plant Taxonomists) for research grants to L.H.M.F., and FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) for a regular research grant to L.G.L. (2011/50859-2), and two collaborative FAPESP-NSF-NASA grants (2012/50260-6 and 2013/50297-0). We are also grateful to the curators of the herbaria listed herein for specimens sent on loan, Jessica Francisco for fieldwork assistance, and Klei Souza for preparing the illustrations.
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