Panicum umbonulatum Swallen in Contr. U.S. Natl. Herb. 29(9): 420. 1950 sec. Dávila & al. 2006
- =Panicum alcobense Swallen in Contr. U.S. Natl. Herb. 29(9): 423. 1950 syn. sec. Dávila & al. 2006
- =Panicum alsophilum Swallen in Contr. U. S. Natl. Herb. 29: 422. 1950 syn. sec. The Plant List 2013
- =Panicum ramiparum Swallen in Contr. U.S. Natl. Herb. 29(9): 423. 1950 syn. sec. Dávila & al. 2006