Peterson, P.M., R.J. Soreng, K. Romaschenko, P. Barberá, A. Quintanar, and C. Aedo. 2019. New combinations and new names in American Cinnagrostis, Peyritschia, and Deschampsia, and three new genera: Greeneochloa, Laegaardia, and Paramochloa (Poeae, Poaceae). Phytoneuron 2019-39: 1–23. Published 16 October 2019. ISSN 2153 733X NEW COMBINATIONS AND NEW NAMES IN AMERICAN CINNAGROSTIS, PEYRITSCHIA, AND DESCHAMPSIA, AND THREE NEW GENERA: GREENEOCHLOA, LAEGAARDIA AND PARAMOCHLOA (POEAE, POACEAE) PAUL M. PETERSON, ROBERT J. SORENG, AND KONSTANTIN ROMASCHENKO Department of Botany National Museum of Natural History Smithsonian Institution Washington, D.C. 20013-7012
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[email protected] PATRICIA BARBERÁ Department of Africa and Madagascar Missouri Botanical Garden St. Louis, Missouri 63110-2291
[email protected] ALEJANDRO QUINTANAR AND CARLOS AEDO Department of Biodiversity and Conservation Real Jardín Botánico Consejo Superior de Investigaciones Científicas 28014 Madrid, Spain
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[email protected] ABSTRACT Based on morphological and molecular evidence we present new combinations or new names for 77 taxa of Cinnagrostis, seven taxa of Deschampsia, and 24 taxa of Peyritschia; and describe three new genera, Greeneochloa P.M. Peterson, Soreng, Romasch. & Barberá, gen. nov. (subtribe Echinopogoninae), Paramochloa P.M. Peterson, Soreng, Romasch. & Barberá, gen. nov. (subtribe Calothecinae), and Laegaardia P.M. Peterson, Soreng, Romasch. & Barberá, gen. nov. (subtribe Calothecinae) with two, two and one species, respectively. In addition to the 116 new taxonomic entities, we provide a key to the genera of American grasses presently or formerly treated in Calamagrostis or Deyeuxia and generic emendations for Cinnagrostis and Peyritschia. RESUMEN De acuerdo con evidencias de carácter morfológico y molecular se presentan nuevas combinaciones o nuevos nombres para 77 táxones de Cinnagrostis, siete táxones de Deschampsia y 24 táxones de Peyritschia, así como la descripción de tres nuevos géneros, Greeneochloa P.M.