956 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



Trisetum pennsylvanicum Trin., Mem. Acad. St. Petersb. VI. Math. Phys. Nat. 



1: 66. 1830. Not T. pennsylvanicum Beauv. Based on Aira pennsylvanica 



Spreng. 

 Glyceria pennsylvanica Heynh., Nom. 1: 361. 1840. Based on Aira pennsyl- 

 vanica Spreng. 

 Reboulea pennsylvanica A. Gray, Man. 591. 1848. Based on Koeleria pennsyl- 

 vanica DC. 

 Eatonia pennsylvanica A. Gray, Man. ed. 2: 558. 1856. Based on Koeleria 



pennsylvanica DC. 

 Eatonia dudleyi Vasey, Bot. Gaz. 11: 116. 1886. Michigan to Long Island, 



and Pennsylvania to North Carolina. [Type, Ithaca, N.Y., Dudley in 1882.] 

 Eatonia nitida Nash, Bull. Torrey Bot. Club 22: 511. 1895. Based on Aira 



nitida Spreng. 

 Eatonia glabra Nash, in Britton, Man. 1043. 1901. Madison Countv, Tenn., 



Bain 507. 

 Sphenopholis nitida glabra Scribn., Rhodora 8: 145. 1906. Based on Eatonia 



glabra Nash. 

 Sphenopholis nitida var. glabra Scribn.; Robinson, Rhodora 10: 65. 1908. 



Based on Eatonia glabra Nash. 

 Sphenopholis glabra Heller, Muhlenbergia 6: 12. 1910. Based on Eatonia 



glabra Nash. 

 Reboulea nitida Farwell, Mich. Acad. Sci. Rept. 17: 181. 1916. Based on 



Aira nitida Spreng. 

 Reboulea nitida var. glabra Farwell, Mich. Acad. Sci. Rept. 17: 181. 1916. 



Based on Eatonia glabra Nash. 

 (1) Sphenopholis obtusata (Michx.) Scribn., Rhodora 8: 144. 1906. Based on 



Aira obtusata Michx. 

 Aira obtusata Michx., Fl. Bor. Amer. 1: 62. 1803. Carolina to Florida 



[type], Michaux. 

 Airopsis obtusata Desv., Jour. Bot. 1: 200. 1808. Based on " Agrostis" 



[error for Aira] obtusata Michx. 

 Festuca obtusata Michx.; Beauv., Ess. Agrost. 163. 1812. Name only, prob- 

 ably error for Aira obtusata Michx. 

 Aira truncata Muhl., Descr. Gram. 83. 1817. Pennsylvania. 

 Koeleria paniculata Nutt., Gen. PI. 2: (Add. 2): 1818. East Florida, T. Say. 

 Koeleria truncata Torr., FL North, and Mid. U.S. 1: 116. 1823. Based on 



Aira truncata Muhl. 

 Poa obtusata Link, Handb. Gewachs. 1: 71. 1829. Based on Aira obtusata 



Michx. 

 Reboulea gracilis Kunth, Rev. Gram. 2: 341. pi. 84. 1830. New England to 



Florida. 

 Trisetum lobatum Trin., Mem. Acad. St. Petersb. VI. Math. Phys. Nat. 1: 66. 



1830. North America. 

 Agrostis obtusata Steud., Nom. Bot. ed. 2. 1: 41. 1840, as synonym of Airopsis 



obtusata Desv. 

 Koeleria lobaia Trin.; Steud., Nom. Bot. ed. 2. 1: 849. 1840. Not K. lobata 



Roem. and Schult., 1817. As synonym of Reboulea gracilis Kunth. 

 Koeleria obtusata Trin.; Steud., Nom. Bot. ed. 2. 1: 849. 1840, as synonym of 



Airopsis obtusata Desv. 

 Reboulea obtusata A. Gray, Man. 591. 1848. Based on Aira obtusata Michx. 

 Eatonia obtusata A. Gray, Man. ed. 2. 558. 1856. Based on Aira obtusata 



Michx. 

 Reboulea truncata Torr.; Munro, Jour. Linn. Soc. Bot. 6: 43. 1862, as syn- 

 onym of R. gracilis Kunth. 

 Graphephorum densiflorum Fourn., Bull. Soc. Bot. France 24: 182. 1877. 



Name only. Mexico [Texas], Berlandier 1617. 

 Eatonia densiflora Fourn., Mex. PL 2: 111. 1886. Bejar, Tex., Berlandier 



1617. 

 Aira mexicana Trin.; Fourn., Mex. PL 2: 111. 1886, as synonym of Eatonia 



densiflora Fourn. 

 Eatonia obtusata var. robusta Vasey; L. H. Dewey, Contrib. U.S. Natl. Herb. 



2: 544. 1894. Western Texas [Wallisville, Wallis in 1881] to Arizona. 

 Eatonia obtusata var. robusta Vasey; Rvdb., Contrib. U.S. Natl. Herb. 3: 190. 



1895. Mullen, Nebr., Rydberg 1807/ 

 Eatonia obtusata var. purpurascens Vasey; Rvdb. and Shear, U.S. Dept.Agr., 



Div. Agrost. Bull. 5: 30. 1897. "Vasey in U.S. Natl. Herb." This, the 



type, from False Washita, Okla., Palmer 404; Nebraska, Shear 252, 252)4, 



Rydberg 2002, Kearney 271, also cited. 



