Fimbristylis dichotoma (L.) Vahl, Enum. pl. 2: 287. 1805 sec. González-Elizondo & al. 2018
- =Scirpus dichotomus L., Sp. Pl.: 50. 1753 syn. sec. Diego & González 2008
- =Scirpus annuus All., Fl. pedem. 2: 277. 1785 syn. sec. Diego & González 2008
- =Scirpus diphyllus Retz., Observ. bot. 5: 15. 1789 syn. sec. Diego & González 2008
- =Fimbristylis glauca Vahl, Enum. pl. 2: 288. 1805 syn. sec. Diego & González 2008
- =Fimbristylis hirtella Vahl, Enum. pl. 2: 286. 1805 syn. sec. Diego & González 2008
- =Fimbristylis laxa Vahl, Enum. pl. 2: 292. 1805 syn. sec. Diego & González 2008
- =Fimbristylis serratula Vahl, Enum. pl. 2: 285. 1805 syn. sec. Diego & González 2008
- =Fimbristylis tomentosa Vahl, Enum. pl. 2: 291. 1805 syn. sec. Diego & González 2008
- =Fimbristylis diphylla (Retz.) Vahl, Enum. pl. 2: 289. 1806 syn. sec. Diego & González 2008
- =Scirpus baldwinianus Schult., Mant. 2: 85. 1824 syn. sec. Diego & González 2008
- =Scirpus elliottii Spreng., Syst. Veg. 4: 28. 1827 syn. sec. Diego & González 2008
- =Fimbristylis verrucosa J. Presl & C. Presl, Reliq. haenk. 1: 190. 1828 syn. sec. Diego & González 2008
- =Fimbristylis baldwiniana (Schult.) Torr. in Ann. Lyceum Nat. Hist. New York 3: 344-345. 1836 syn. sec. Diego & González 2008
- =Scirpus depauperatus Muhl. ex Kunth, Enum. pl. 2: 233. 1837 syn. sec. Diego & González 2008
- =Fimbristylis brizoides Nees & Meyen, Fl. bras. 2 parte 1: 74-76. 1842 syn. sec. Diego & González 2008
- =Fimbristylis scherardii Bubani, Dodecanthea 29. 1850 syn. sec. Diego & González 2008
- =Fimbristylis polymorpha Boeckeler in Vidensk. Meddel. Dansk Naturhist. Foren. Kjobenhavn 3. 1: 141. 1869 syn. sec. Diego & González 2008
- =Iria polymorpha (Boeckeler) Kuntze, Revis. gen. pl. 2: 752. 1891 syn. sec. Diego & González 2008
- =Fimbristylis alamosana Fernald in Proc. Amer. Acad. Arts 36 (Contr. Gray Herb. n. s. 21): 491-492. 1901 syn. sec. Diego & González 2008
- =Fimbristylis holwayana Fernald in Proc. Amer. Acad. Arts 36 (Contr. Gray Herb. n. s. 21): 492. 1901 syn. sec. Diego & González 2008
- =Fimbristylis annua f. brizoides (Nees & Meyen) Kük. in Repert. Spec. Nov. Vegni Veg. 23: 196. 1926 syn. sec. Diego & González 2008
- =Fimbristylis annua var. diphylla (Retz.) Kük. in Repert. Spec. Nov. Regni Veg. 23: 196. 1926 syn. sec. Diego & González 2008
- =Fimbristylis darlingtoniana Pennell in Bartonia 15: 30-31. 1933 syn. sec. Diego & González 2008
- =Fimbristylis dichotoma f. annua (All.) Ohwi in J. Jap. Bot. 14: 477. 1938 syn. sec. Diego & González 2008
- =Fimbristylis diphylla var. tomentosa (Vahl) Barros in Anales Mus. Argent. Ci. Nat. "Bernardino Rivadavia" 41: 328. 1945 syn. sec. Diego & González 2008
- =Fimbristylis arenicola Wiggins in Contr. Dudley Herb. 4: 15. 1950 syn. sec. Diego & González 2008
- =Fimbristylis diphylla subsp. diffusa D.B. Ward, Castanea 33: 127-129. f. 2 Db. 1968 syn. sec. Diego & González 2008