| Cyperaceae | |
Carex squarrosa fo. robusta
| Peck | Rep. (Annual) Regents Univ. State New York New York State Mus. 48: 198 | 1896 |
| Cyperaceae | |
Carex squarrosa var. squarrosa
| | | |
| Cyperaceae | |
Carex squarrosa var. typhina
| (Michx.) Nutt. | Gen. N. Amer. Pl. 2: 204 | 1818 |
| Cyperaceae | |
Carex squarrosa var. typhinoides
| (Schwein.) Dewey | Amer. J. Sci. Arts 11(2): 316 | 1826 |