Cenchrus spinifex Cav., Icon. 5: 38, t. 461. 1799 sec. Herrera-Arrieta 2014
- =Cenchrus incertus M.A. Curtis in Boston J. Nat. Hist. 1: 135. 1837 syn. sec. Govaerts 2013
- =Cenchrus pauciflorus Benth., Bot. Voy. Sulph.: 56. 1844 syn. sec. Govaerts 2013
- =Cenchrus pauciflorus Benth. var. pauciflorus, Bot. Voy. Sulph.: 56. 1844 syn. sec. ???
- =Cenchrus muricatus Phil. in Anales Univ. Chile 36: 202. 1870 syn. sec. Govaerts 2013
- =Cenchrus strictus Chapm. in Bot. Gaz. 3(3): 20. 1878 syn. sec. Govaerts 2013
- =Cenchrus roseus E. Fourn., Mexic. Pl. 2: 50. 1886 syn. sec. Govaerts 2013
- =Cenchrus microcephalus Nash ex Hitchc. & Chase in Contr. U.S. Natl. Herb. 18(7): 356. 1917 syn. sec. Govaerts 2013
- =Cenchrus humilis Hitchc. in Contr. U.S. Natl. Herb. 24(8): 488. 1927 syn. sec. Govaerts 2013
- =Cenchrus albertsonii Runyon in Amer. J. Bot. 26(7): 485-486, f. 1-2. 1939 syn. sec. Govaerts 2013
- =Cenchrus parviceps Shinners in Field & Lab. 24(2): 73-74. 1956 syn. sec. Govaerts 2013
- =Cenchrus pauciflorus var. muricatus Caro & E.A. Sánchez in Kurtziana 4: 122, f. 8. 1967 syn. sec. Govaerts 2013