Axonopus purpusii (Mez) Chase in J. Wash. Acad. Sci. 17: 144. 1927 sec. Dávila & al. 2018
- ≡Paspalum purpusii Mez in Bot. Jahrb. Syst. 56(Beibl. 125): 10. 1921 syn. sec. Dávila & al. 2006
- =Paspalum flexile Mez in Bot. Jahrb. Syst. 56(Beibl. 125): 9. 1921 syn. sec. Dávila & al. 2006
- =Axonopus purpusii (Mez) Chase var. purpusii in J. Wash. Acad. Sci. 17: 144. 1927 syn. sec. Dávila & al. 2006
- =Axonopus flexilis (Mez) Henrard in Blumea 4: 510. 1941 syn. sec. Dávila & al. 2006
- =Axonopus anomalus Swallen in Contr. U.S. Natl. Herb. 29: 268. 1948 syn. sec. Dávila & al. 2006
- =Axonopus purpusii var. glabrescens Valls ex Longhi-Wagner in Iheringia, Bot. 38: 28. 1988 syn. sec. Dávila & al. 2006