Polypogon australis Brongn., Voy. Monde 2: 21. 1829 sec. Dávila & al. 2018
- =Polypogon adscensionis Trin. in Mém. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 6, Sci. Math., Seconde Pt. Sci. Nat. 6,4(3-4): 257. 1841 syn. sec. Dávila & al. 2006
- =Polypogon chonoticus Hook. f., Fl. Antarct. 2: 374. 1846 syn. sec. Dávila & al. 2006
- =Polypogon radicans Steud., Syn. Pl. Glumac. 1: 184. 1854 syn. sec. Dávila & al. 2006
- =Polypogon purpurascens Phil. in Anales Univ. Chile 94: 9. 1896 syn. sec. Dávila & al. 2006
- =Polypogon elongatus var. patagonica Speg. in Revista Fac. Agron. Veterin. (Buenos Aires) 30-31: 582. 1897 syn. sec. Dávila & al. 2006
- =Polypogon interruptus var. crinitus (Kuntze) Hack. in Anales Mus. Nac. Buenos Aires 13: 473. 1906 syn. sec. Dávila & al. 2006