Panicum millegrana Poir., Encycl., Suppl. 4: 278. 1816 sec. Dávila & al. 2018
- =Panicum hirsutum Lam., Encycl. 4: 741. 1798 syn. sec. Dávila & al. 2006
- =Panicum hirsutum var. beta Lam., Encycl. 4: 741. 1798 syn. sec. Dávila & al. 2006
- =Panicum patentissimum Desv. ex Poir., Encycl. Suppl. 4: 283. 1816 syn. sec. Dávila & al. 2006
- =Panicum rugulosum Trin., Gram. Panic.: 195. 1826 syn. sec. Dávila & al. 2006
- =Panicum beyrichii Kunth, Révis. Gramin. 2: 231, t. 27. 1830 syn. sec. Dávila & al. 2006
- =Panicum lasianthum Trin., Sp. Gram. 3(21): , t. 245. 1829-1830 syn. sec. Dávila & al. 2006
- =Panicum dispersum Trin. in Mém. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 6, Sci. Math., Seconde Pt. Sci. Nat. 3,1(2-3): 282. 1834 syn. sec. Dávila & al. 2006
- =Panicum rugulosum var. glabrescens Döll, Fl. Bras. 2(2): 259. 1877 syn. sec. Dávila & al. 2006
- =Panicum rugulosum var. subvelutinum Döll, Fl. Bras. 2(2): 259. 1877 syn. sec. Dávila & al. 2006
- =Panicum subglobosum Hack. in Bull. Herb. Boissier, sér. 2, 4(3): 274. 1904 syn. sec. Dávila & al. 2006
- =Panicum rugulosum var. lasianthum (Trin.) Hack., Ergebn. Bot. Exp. Südbras. 1: 11. 1906 syn. sec. Dávila & al. 2006
- =Panicum rugulosum f. effusum Hack. in Repert. Spec. Nov. Regni Veg. 6(21-26): 343. 1909 syn. sec. Dávila & al. 2006
- =Panicum multinodosum Swallen in Phytologia 14(2): 83. 1966 syn. sec. Dávila & al. 2006