Dichanthelium dichotomum (L.) Gould Dichanthelium dichotomum (L.) Gould in Brittonia 26(1): 59. 1974 sec. Dávila & al. 2018=Panicum gravius Hitchc. & Chase in Rhodora 8(95): 205-206. 1906 syn. sec. Dávila & al. 2006