Setaria variifolia (Swallen) Davidse Setaria variifolia (Swallen) Davidse in Ann. Missouri Bot. Gard. 68(1): 226. 1981 sec. Dávila & al. 2018≡Panicum variifolium Swallen in Publ. Carnegie Inst. Wash. 436: 345, f. 7. 1934 syn. sec. Dávila & al. 2006