Abstract. Dendropanax fluminensis, a new species of Araliaceae from the Atlantic Forest of Rio de Janeiro state, Brazil, is here described and illustrated. It is compared with morphologically similar species from the Brazilian Atlantic Forest, especially D. monogynus, from which it can be distinguished by the inflorescences with 2–5 secondary axes, shorter pedicels in flower and in fruit, and 3- or 4-carpellate ovaries. The new species has been found in lowland rainforests from sea-level to about 200 m elevation in the central portion of Rio de Janeiro state. Information on the geographic distribution, habitat preferences, and conservation status according with IUCN Red List categories and criteria are also presented.
Resumo. Dendropanax fluminensis, uma nova espécie de Araliaceae da Mata Atlântica do estado do Rio de Janeiro, Brasil, é aqui descrita e ilustrada. A espécie é comparada a espécies morfologicamente semelhantes da Mata Atlântica brasileira, especialmente D. monogynus, da qual o novo táxon pode ser distinto pelas inflorescências com 2–5 eixos secundários, pedicelos das flores e dos frutos mais curtos e ovários com 3−4 carpelos. A espécie tem sido encontrada em florestas pluviais de terras baixas do nível do mar a até ca. 200 m de altitude na porção central do Rio de Janeiro. Informações sobre a distribuição geográfica, o hábitat preferencial e o estado de conservação de acordo com as categorias e critérios da Lista Vermelha da IUCN também são fornecidos.
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Acknowledgments
Financial support for this study was provided by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP, grant # 2010/02814-7). I am grateful to Pete Lowry and Greg Plunkett for their helpful comments to the final manuscript, to the curators of the herbaria visited and for those herbaria that sent critical material for the completion of this study, and to Klei Souza for preparing the illustration.
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Fiaschi, P. A new species of Dendropanax (Araliaceae) from the Brazilian Atlantic Forest. Brittonia 68, 103–110 (2016). https://doi.org/10.1007/s12228-015-9402-4
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DOI: https://doi.org/10.1007/s12228-015-9402-4