(Identification sources: 



Achnatherum aridum (M. E. Jones) Barkworth - RBS, KTZ. SFW, W&W' 



[Stipa arida M. E. Jones] - HDH, IMF, UTF, W&W, W 

 Achnatherum arnowiae (S. Welsh & N. D. Atwood) Barkworth - FNA 



[NS - reported by UT3 in Mesa Co., CO, voucher not yet seen] 



[Stipa arnowiae S. Welsh & N. D. Atwood] - UT3 

 Achnatherum contractum (B. L. Johnson) Barkworth - DornOl, FNA, KTZ, W&W 1 



[Oryzopsis contracts (B. L. Johnson) Shechter - RMC 



[Stipa hymenoides Roem. & Schult.j - W&W 

 Achnatherum hymenoides (Roem. & Schult.) Barkworth - RBS, DornOl, FNA, KTZ, SF!, 

 W&W 1 



[Oryzopsis hymenoides (Roem. & Schult.) Ricker] - GPF, HDH, IMF 



[Oryzopsis hymenoides (Roem. & Schult.) Ricker ex Piper] - E/W 



[Stipa hymenoides Roem. & Schult.] - UTF, W&W 

 Achnatherum lettermanii (Vasey) Barkworth - RBS, KTZ, SF!, W&W 1 



[Stipa lettermanii Vasey] - DornOl, HDH, IMF, UTF, W&W, E/W 

 Achnatherum lobatum (Swallen) Barkworth - FNA 



[Stipa lobata Swallen] - FNA 

 Achnatherum nelsonii (Scribn.) Barkworth subsp. dorei (Barkworth & J. Maze) Barkworth] - 

 FNA, RBS 



[Achnatherum nelsonii (Scribn.) Barkworth] - SF!, W&W 1 , KTZ 



[Stipa Columbiana Macoim var. columbiana] - 1 1 I.I II. 1 M I ■ 



[Stipa nelsonii Scribn. var. dorei (Barkworth & J. Maze) Dorn] - E/W 

 Achnatherum nelsonii (Scribn.) Barkworth subsp. nelsonii - FNA, RBS 



[Acbnathcnim nelsonii (Scribn.) Barkworth] - SF!, W&W 1 



[Achnatherum nelsonii (Scribn.) Barkworth var. nelsonii] - DornOl 



[Slipa columbiana Macouti var. nelsonii (Scribn.) Hitchc] - HDH 



[Stipa columbiana Macoun var. nelsonii (Scribn.) St. John] - 1 M I 



[Stipa nelsoniii Scribn.] - W&W 



[Stipa nelsoniii Scribn. subsp. nelsonii] - UTF 



[Stipa nelsonii Scribn. var. nelsonii] - Hartman06, E/W 



[Stipa williamsii Scribn.] - HDH, W&W 

 Achnatherum nevadense (B. L. Johnson) Barkworth - DornOl, KTZ 



[Stipa nevadensis B. L. Johnson] - IMF, UTF 

 Achnatherum occidentale (Thurb.) Barkworth - RBS, DornOl, FNA 



[Achnatlierum occidentale (Thurb. ex S. Watson) Barkworth subsp. pubescens [Vase; ) Barkworth] - KTZ, 

 FNA 



[Stipa occidental Thurb.] - GPF, IMF, UTF 



[Stipa occidentalis Thurb. ex S. Watson] -W&W, err. rep. 

 Achnatherum perplexum Hoge & Barkworth - RBS, FNA 



[Stipa perplexa (Hoge & Barkworth) J. Wipff & S.D. Jones] 

 Achnatherum pinetorum (M. E. Jones) Barkworth - RBS, DornOl, KTZ, SFW, W&W 1 



[Stipa pinetorum M. E. Jones] - HDH, IMF, UTF, W&W, W 

 Achnatherum richardsonii (Link) Barkworth - RBS, DomOl, KTZ, SF!, W&W 1 



[Stipa richardsonii Link] - GPF, HDH, W&W, E/W 

 Achnatherum robustum (Vasey) Barkworth - RBS. DornOl, KTZ, SFE, W&W 1 



[Stipa robusta (Vasey) Scribn.] - GPF, HDH, W&W, E 

 Achnatherum scribneri (Vasey) Barkworth - RBS, DornOl, KTZ, SF!, W&W 1 



[Stipa scribneri Vasey] - GPF, HDH, IMF, W&W, E/W 

 Achnatherum X bloomeri (Bol.) Barkworth - FNA, KTZ, W&W 1 



[Oryzopsis bloomeri (Bol.) Ricker] - GPF, HDH 



[Orv/opsis hymenoitles X Stipa occidentalis] - K I / 



2 



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