A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, x Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa Author Peterson, Paul M. Department of Botany MRC- 166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013 - 7012, USA peterson@si.edu Author Romaschenko, Konstantin Department of Botany MRC- 166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013 - 7012, USA Author Soreng, Robert J. https://orcid.org/0000-0002-8358-4915 Department of Botany MRC- 166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013 - 7012, USA Author Reyna, Jesus Valdes Departamento de Botanica, Universidad Autonoma Agraria Antonio Narro, Saltillo, C. P. 25315, Mexico text PhytoKeys 2019 2019-07-16 126 89 125 http://dx.doi.org/10.3897/phytokeys.126.34096 journal article http://dx.doi.org/10.3897/phytokeys.126.34096 1314-2003-126-89 FFC2D06D486FF317CE32972BDE2BFF93 3348547 Eriocoma webberi Thurb., Bot. California 2: 283-284. 1880 Eriocoma webberi Thurb., Bot. California 2: 283-284. 1880 [Basionym] ≡ Oryzopsis webberi (Thurb.) Benth. ex Vasey, Grass. U.S. 23. 1883 ≡ Stipa webberi (Thurb.) B .L. Johnson, Bot. Gaz. 107: 25. 1945 ≡ Achnatherum webberi (Thurb.) Barkworth, Phytologia 74(1): 14. 1993. Type: USA, California, Sierra Valley, 1 May 1871, H.N. Bolander , A. Kellogg & co. s.n . (holotype: GH-00024083 [image!]; isotypes: MO-2151485[image!], NY-00381032 [image!], US-81935!).