Bouteloua ramosa Scribn. ex Vasey Bouteloua ramosa Scribn. ex Vasey in U.S.D.A. Div. Bot. Bull. 12(1): t. 44. 1890 sec. Dávila & al. 2018=Bouteloua oligostachya var. ramosa (Scribn. ex Vasey) Scribn. ex Beal, Grass. N. Amer. 2: 418. 1896 syn. sec. Dávila & al. 2006