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Rhynchospora unguinux (Cyperaceae), a new species of Rhynchospora sect. Pauciflorae from the Serra dos Carajás, Pará, Brazil

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Summary

Rhynchospora unguinux is described as a new species of Cyperaceae from the Serra dos Carajás (Pará, Brazil). Morphological description, taxonomic comments, distribution, habitat data, a preliminary conservation status, and illustrations are provided. Rhynchospora unguinux is characterised by the caespitose habit, ciliate involucral bracts, vinaceous proximal and medial glumes with navicular apex, proximally plumose perianth bristles, and nutlets with involute claw-like margins with lamellar lobes. The new species is similar to R. subplumosa and R. trichochaeta but differs from them by the colour pattern of the spikelets, and the apex shape of the proximal and medial glumes.

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Acknowledgements

We are grateful to the Conselho Nacional de Pesquisa (CNPq) for a scholarship to LJCS (Process: 131573/2017-9); to the Programa de Capacitação Institucional (PCI/MPEG/MCTIC) for a fellowship to CSN (Process: 312832/2016-8); to the Instituto Tecnológico Vale (ITV) for technical and scientific cooperation (Process: 01205.000250/2014-10); to the ICMBio and Frederico Martins for granting collecting permits in the study area; to the curators of the consulted herbaria (BHCB, IAN, INPA, MG, and RB); to João Silveira for the preparation of illustrations and to Alexander Popovkin for the English revision. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001.

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Authors and Affiliations

  1. Universidade Federal Rural da Amazônia, Programa de Pós-graduação em Ciências Biológicas – Botânica Tropical, Museu Paraense Emílio Goeldi – MPEG, Campus de Pesquisa. Av. Perimetral, 1901, Terra Firme, 66077-530, Belém, PA, Brazil

    Layla Jamylle Costa Schneider

  2. Programa de Pós-graduação em Biodiversidade e Evolução, Museu Paraense Emílio Goeldi - MPEG, Campus de Pesquisa. Av. Perimetral, 1901, Terra Firme, 66077-530, Belém, PA, Brazil

    Clebiana de Sá Nunes

  3. Museu Paraense Emílio Goeldi - MPEG, Campus de Pesquisa, Coordenação de Botânica - CBO. Av. Perimetral, 1901, Terra Firme, 66077-530, Belém, PA, Brazil

    Pedro Lage Viana & André dos Santos Bragança Gil

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  1. Layla Jamylle Costa Schneider
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  2. Clebiana de Sá Nunes
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  3. Pedro Lage Viana
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  4. André dos Santos Bragança Gil
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Correspondence to Layla Jamylle Costa Schneider.

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Schneider, L.J.C., de Sá Nunes, C., Viana, P.L. et al. Rhynchospora unguinux (Cyperaceae), a new species of Rhynchospora sect. Pauciflorae from the Serra dos Carajás, Pará, Brazil. Kew Bull 74, 60 (2019). https://doi.org/10.1007/s12225-019-9846-x

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