| 
                
                    Cinna  arkansana
                
             | Cinna arkansana (Nuttall) G. C. Tucker, Harvard Pap. Bot. 9: 62. 1996. | Greenia arkansana Nuttall 1835. |   | 
			
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                    Greenia  arkansana
                
             | Greenia arkansana Nuttall, Trans. Amer. Philos. Soc., ser. 2. 5: 142. 1835. |   | OKLAHOMA [cited as "Arkansas Terr."]: Choctaw Co.: Red River near the Kiamesha [Kiamichi], s.d., Nuttall s.n. (holotype: BM; isotypes: PH, US(fragm)). | 
			
				| 
                
                    Limnas  arkansana
                
             | Limnas arkansana (Nuttall) Trinius ex Steudel, Nomencl. Bot., ed. 2. 2: 45. 1841. | Greenia arkansana Nuttall 1835. |   | 
			
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                    Limnas  pilosa
                
             | Limnas pilosa (Trinius) Steudel, Syn. Pl. Glumac. 1: 421. 1854. | Sclerachne pilosa Trinius 1845. |   | 
			
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                    Limnodea  arkansana  var. pilosa
                
             | Limnodea arkansana (Nuttall) L. H. Dewey, var. pilosa (Trinius) Lamson- Scribner, U.S.D.A. Div. Agrost. Bull. 7(ed. 3): 139. 1900. | Sclerachne pilosa Trinius 1845. |   | 
			
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                    Muhlenbergia  hirtula
                
             | Muhlenbergia hirtula Steudel, Syn. Pl. Glumac. 1: 180. 1854. |   | TEXAS: TEXAS: Without data, Drummond s.n. (holotype: P; isotype: US(fragm)). | 
			
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                    Sclerachne  arkansana
                
             | Sclerachne arkansana (Nuttall) Torrey ex Trinius, Mém. Acad. Imp. Sci. Saint- Petersbourg, Ser. 6, Sci. Math., Seconde Pt. Sci. Nat. 4: 273. 1845. | Greenia arkansana Nuttall 1835. |   | 
			
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                    Sclerachne  pilosa
                
             | Sclerachne pilosa Trinius, Mém. Acad. Imp. Sci. Saint-Petersbourg, Ser. 6, Sci. Math., Seconde Pt. Sci. Nat. 4: 275. 1845. |   | TEXAS | 
			
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                    Stipa  demissa
                
             | Stipa demissa Steudel, Syn. Pl. Glumac. 1: 130. 1854. |   | LOUISIANA: Orleans Par.: New Orleans, 1832, Drummond 465 (holotype: P; isotype: US(fragm)). | 
			
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                    Thurberia  arkansana
                
             | Thurberia arkansana (Nuttall) Bentham ex Vasey, Dept. Agric. Spec. Rep. 63: 16. 1883. | Greenia arkansana Nuttall 1835. |   | 
			
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                    Thurberia  pilosa
                
             | Thurberia pilosa (Trinius) Vasey, U.S.D.A. Spec. Rep. 63: 16. 1883. | Sclerachne pilosa Trinius 1845. |   |