Plant Ecology and Evolution 154(3): 470-482, doi: 10.5091/plecevo.2021.1818
Eremitis clarkiae and E. vinacea (Poaceae, Bambusoideae): two new species of herbaceous bamboos endemic to the Atlantic Forest of southern Bahia, Brazil increase the diversity of the genus in this hotspot
expand article infoFabrício Ferreira‡, Cassiano A. Dorneles Welker§, Reyjane P. Oliveira|
‡ Universidade Federal de Uberlândia, Uberlândia, Brazil§ Universidade Federal de Uberlândia, Instituto de Biologia, Programa de Pós-Graduação em Biologia Vegetal, Uberlândia, Minas Gerais, Brazil| Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Programa de Pós-Graduação em Botânica, Feira de Santana, Bahia, Brazil

Corresponding author: Fabrício Ferreira ( fmoreiraf@yahoo.com.br )

© Fabrício Moreira Ferreira, Cassiano A. Dorneles Welker, Reyjane P. Oliveira.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Ferreira F, Welker CAD, Oliveira RP (2021) Eremitis clarkiae and E. vinacea (Poaceae, Bambusoideae): two new species of herbaceous bamboos endemic to the Atlantic Forest of southern Bahia, Brazil increase the diversity of the genus in this hotspot. Plant Ecology and Evolution 154(3): 470-482. https://doi.org/10.5091/plecevo.2021.1818
Open Access
Abstract

Background and aims – We here describe two new species of Eremitis from Bahia, Brazil, and compare them with morphologically similar species. We also provide illustrations, photos, a distribution map, and notes on habitat and conservation status of the new species.

Material and methods – This study was based on fieldwork, analysis of herbarium specimens, and literature review. Specimens collected were analyzed and photographed during fieldwork and observed in cultivation in a greenhouse. The conservation assessment is based on field observations and spatial analyses, following the IUCN guidelines and criteria.

Results – Eremitis clarkiae sp. nov. occurs in southern Bahia and has been collected only twice, in the municipality of Floresta Azul. The new species is similar to E. jardimii and E. robusta, both also endemic to Bahia, but can be distinguished by several vegetative and reproductive structures longer than those observed in these species, such as leafy culms, ligules, decumbent culm inflorescences, and pedicels of the staminate spikelets of the staminate whorls. Eremitis vinacea sp. nov. was collected in three localities in southern Bahia, but only the type population was found during recent field trips, in the municipality of Camacã. It is similar to E. afimbriata, a species endemic to Espírito Santo state, being differentiated by its leaf sheaths with persistent fimbriae (vs absent), leaf blades with green adaxial surface (vs bluish green with a blue iridescence), and a single inflorescence on decumbent culms (vs multiple). Both new species are endemic to the Bahian Coastal Forests subregion and should be considered Critically Endangered (CR), according to the IUCN guidelines and criteria.

Keywords
Bahian Coastal Forests, diversity, grasses, IUCN Red List, Neotropics, Parianinae

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