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Issue: Vol. 702 No. 2: 27 May 2025
Type: Article
Published: 2025-05-27
DOI: 10.11646/phytotaxa.702.2.4
Page range: 166-174
Abstract views: 87
PDF downloaded: 10

Mesosetum aureum (Poaceae: Paspaleae: Arthropogoninae), an annual new species with reddish golden trichomes from the northern South America

Current Address: Department of Biosciences, Federal Rural University of the Semi-Arid Region, Mossoró, RN, Brazil, CEP 59.625-900
Departamento de Fitotecnia, Universidade Federal do Ceará, Campus do Pici, Fortaleza, CE, Brazil, CEP 60356-000
Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom, TW9 3AE
Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica - PqEB, Brasília, DF, Brazil, CEP 70770-917
Post-graduate Program in Botany, University of Brasília, Campus Darcy Ribeiro, Brasília, DF, Brazil, CEP 70910-900
Amazon rainforest Guiana Amazonian Park Neotropics Gramineae Monocots

Abstract

A new species, Mesosetum aureum, is here described and illustrated. It is an annual species morphologically related to M. cayennense and M. rottboellioides, but can be recognized by the size of racemes and pedicels, size and pilosity of glumes, and length of lower lemma and upper anthecium. It is found in rocky savannas and humid areas of French Guiana, locally called Inselbergs. Micromorphology of the upper anthecium, conservation status, and comparisons with similar species are provided.

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How to Cite

Silva, A.S.D., Ribeiro, A.R.D.O., Reis, P.A.D., Buso, G.S.C. & Oliveira, R.C.D. (2025) Mesosetum aureum (Poaceae: Paspaleae: Arthropogoninae), an annual new species with reddish golden trichomes from the northern South America. Phytotaxa 702 (2): 166–174. https://doi.org/10.11646/phytotaxa.702.2.4