Amaranthus australis (A. Gray) J.D. Sauer in Madroño 13: 15. 1955 sec. S.L. Maina & al. 2004
- ≡Acnida australis A. Gray in Amer. Naturalist 10: 489. 1876
- Lectotype (designated by Sauer 1955: 15): A. W. Chapman s.n.
- =Acnida cuspidata Bertero ex Spreng. in Syst. Veg. 3: 903. 1826
