Trichoneura peruviana sp. nov. is described and illustrated. The new species, from the Western Cordillera de los Andes in Peru, in the middle of the snowy Goylanto and Paylogen at Omate valley, differs from T. lindleyana in having longer glumes (lower glumes 5–5.25 × 0.2–0.25 mm and upper glumes 5.5–5.7 × 0.3–0.4 mm), shorter fertile lemmas 2.1–2.5 mm long with ciliate margins, the cilia 0.5–0.6 mm long, and the lemma apex is dentate, 2−fid, and 1-awned with awns 1.5−3.5 mm long. A key to the species of Trichoneura in Peru is included and the conservation status of the new species is evaluated.
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We thank the editor and anonymous reviewer for their constructive comments, which helped improve the manuscript, Juan Jos? Alegria Olivera (Lima, Peru) for providing information of the genus, the directors of the MOL, HSP herbaria for facilitating access to their collections, and Henry Casta?eda (Lima, Peru) for editing the illustration. The third author thanks K. Chicalla-R?os (Moquegua, Peru) for fieldwork support, Robert Resersur (Arequipa, Peru) for logistic support, and SERFOR for the collections permits N? 133-2018-MINAGRI-SERFOR/DGGSPFFS and N? 495-2018-MINAGRI-SERFOR-DGGSPFFS.
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