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 robusta (Vasey) Romasch., comb. nov. Stipa viridula var. robusta Vasey, Contr. U.S. Natl. Herb. 1(2): 56. 1890 [Basionym] ≡ Stipa robusta (Vasey) Scribn., Bull. Div. Agrostol., U.S.D.A. 5: 23. 1897 ≡ Stipa vaseyi Scribn., Bull. Div. Agrostol., U.S.D.A. 11: 46. 1898, nom. illeg. superfl. ≡ Achnatherum robustum (Vasey) Barkworth, Phytologia 74(1): 12. 1993. Type: USA, New Mexico, 1881, G.R. Vasey s.n. (conserved type: US-993051!). Fig. 3A-G . Figure 3. Eriocoma robusta : A habit B sheath and blade with a hairy collar C panicle D glumes E floret F floret (close up) G caryopsis. Neotrinia splendens : H panicle I glumes J floret K floret (close up) with anther tip (arrow).