- Achnatherum aridum
- Achnatherum aridum (M. E. Jones) Barkworth
- Achnatherum brachychaetum
- Achnatherum brandisii
- Achnatherum brandisii (Mez) Z. L. Wu
- Achnatherum bromoides
- Achnatherum bromoides (L.) P. Beauv.
- Achnatherum bromoides (L.) P.Beauv.
- Achnatherum calamagrostis
- Achnatherum calamagrostis (L.) P.Beauv.
- Achnatherum calamagrostis (L.) BEAUV.
- Achnatherum calamagrostis (L.) P. Beauv.
- Achnatherum caragana
- Achnatherum caragana (Trin.) Nevski
- Achnatherum contractum
- Achnatherum contractum (B. L. Johnson) Barkworth
- Achnatherum diegoense
- Achnatherum duthiei
- Achnatherum duthiei (Hook. f.) P. C. Kuo & S. L. Lu
- Achnatherum hymenoides
- Achnatherum hymenoides (Roem. & Schult.) Barkworth
- Achnatherum inebrians
- Achnatherum inebrians (Hance) Keng
- Achnatherum jacquemontii
- Achnatherum jacquemontii (Jaub. & Spach) P. C. Kuo & S. L. Lu
- Achnatherum lemmonii
- Achnatherum lemmonii (Vasey) Barkworth subsp. lemmonii
- Achnatherum lemmonii (Vasey) Barkworth
- Achnatherum lettermanii
- Achnatherum lettermanii (Vasey) Barkworth
- Achnatherum miliaceum
- Achnatherum nelsonii
- Achnatherum nelsonii (Scribn.) Barkworth subsp. dorei (Barkworth & J. Maze) Barkworth
- Achnatherum nelsonii (Scribn.) Barkworth
- Achnatherum nelsonii (Scribn.) Barkworth subsp. nelsonii
- Achnatherum nevadense
- Achnatherum nevadense (B. L. Johnson) Barkworth
- Achnatherum occidentale
- Achnatherum occidentale (Thurb. ex S. Watson) Barkworth subsp. occidentale
- Achnatherum occidentale (Thurb.) Barkworth subsp. californicum (Merr. & Burtt Davy) Barkworth
- Achnatherum occidentale (Thurb.) Barkworth
- Achnatherum paradoxum
- Achnatherum paradoxum (L.) Banfi, Galasso & Bartolucci
- Achnatherum parishii
- Achnatherum parishii (Vasey) Barkworth subsp. depauperatum (M. E. Jones) Barkworth
- Achnatherum parishii (Vasey) Barkworth subsp. parishii
- Achnatherum pekinense
- Achnatherum pekinense (Hance) Ohwi
- Achnatherum richardsonii
- Achnatherum richardsonii (Link) Barkworth
- Achnatherum robustum
- Achnatherum robustum (Vasey) Barkworth
- Achnatherum scribneri
- Achnatherum scribneri (Vasey) Barkworth
- Achnatherum sibiricum
- Achnatherum sibiricum (L.) Keng ex Tzvelev
- Achnatherum sp.
- Achnatherum speciosum
- Achnatherum speciosum (Trin. & Rupr.) Barkworth
- Achnatherum splendens
- Achnatherum splendens (Trin.) Nevski
- Achnatherum stillmanii
- Achnatherum stillmanii (Bol.) Barkworth
- Achnatherum thurberianum
- Achnatherum thurberianum (Piper) Barkworth
- Achnatherum virescens
- Achnatherum virescens (Trin.) Banfi, Galasso & Bartolucci
- Aristella bromoides
- Aristella bromoides (L.) Bertol.
- Oryzopsis contracta
- Oryzopsis hymenoides
- Stipa arida
- Stipa brandisii
- Stipa bromoides
- Stipa bromoides (L.) Dörfl.
- Stipa calamagrostis
- Stipa calamagrostis (L.) P. Beauv.
- Stipa caragana
- Stipa coronata
- Stipa diegoensis
- Stipa diegoensis Swallen
- Stipa lemmonii
- Stipa lettermanii
- Stipa occidentalis
- Stipa parishii
- Stipa robusta
- Stipa robusta (Vasey) Scribn.
- Stipa sibirica
- Stipa sibirica (L.) Lam.
- Stipa splendens
- Stipa thurberiana