Pseudoeriocoma acuta (Swallen) Romasch. in PhytoKeys 126: 113. 2019 sec. Peterson & al. 2019
- ≡Stipa acuta Swallen in J. Wash. Acad. Sci. 30: 212. 1940 syn. sec. POWO 2019
- =Achnatherum acutum (Swallen) Valdés-Reyna & Barkworth in Contr. U.S. Natl. Herb. 48: 15. 2003 syn. sec. POWO 2019