Panicum parcum Hitchc. & Chase Panicum parcum Hitchc. & Chase in Contr. U.S. Natl. Herb. 15: 68, f. 53. 1910 sec. Dávila & al. 2018=Panicum decolorans var. parcum (Hitchc. & Chase) Beetle in Phytologia 54(1): 4. 1983 syn. sec. Dávila & al. 2006