| Poaceae | |
Hordeum pusillum var. euclaston
| (Steud.) Hauman | Anales Mus. Nac. Hist. Nat. Buenos Aires 28: 297 | 1916 |
| Poaceae | |
Hordeum pusillum subsp. flexuosum
| (Nees) Covas | Fl. Prov. Buenos Aires 4(2): 184 | 1970 |
| Poaceae | |
Hordeum pusillum var. pubens
| Hitchc. | J. Washington Acad. Sci. 23(10): 453 | 1933 |
| Poaceae | |
Hordeum pusillum subsp. pusillum
| | | |
| Poaceae | |
Hordeum pusillum var. pusillum
| | | |
| Poaceae | ** |
Hordeum pusillum var. typicum
| Hauman | Anales Mus. Nac. Hist. Nat. Buenos Aires 28: 266 | 1916 |