Cenchrus longispinus (Hack.) Fernald in Rhodora 45(538): 388. 1943 sec. Dávila & al. 2018
- ≡Cenchrus echinatus f. longispina Hack. in Allg. Bot. Z. Syst. 9: 169. 1903 syn. sec. Dávila & al. 2006
- =Cenchrus carolinianus Walter, Fl. Carol.: 79. 1788 syn. sec. Dávila & al. 2006
- =Cenchrus pauciflorus var. longispinus (Hack.) Jansen & Wacht. in Ned. Kruidk. Arch. 56: 246. 1949 syn. sec. Dávila & al. 2006