| Cyperaceae | |
Carex oligocarpa var. calcifugens
| (Naczi) D.B. Ward | Phytologia 94(3): 469 | 2012 |
| Cyperaceae | |
Carex oligocarpa var. hitchcockiana
| (Dewey) Boeckeler | Linnaea 41: 149 | 1877 |
| Cyperaceae | ** |
Carex oligocarpa var. hitchcockiana
| (Dewey) Kük. | Pflanzenr. IV. 20(Heft 38): 521 | 1909 |
| Cyperaceae | ** |
Carex oligocarpa var. latifolia
| A. Gray | N. Amer. Gram. 2: 178 | 1835 |
| Cyperaceae | |
Carex oligocarpa var. major
| Torr. | Fl. New York 2: 406 | 1843 |
| Cyperaceae | |
Carex oligocarpa var. minor
| Boott | Ill. Gen. Carex 1: 40 | 1858 |
| Cyperaceae | |
Carex oligocarpa var. oligocarpa
| | | |
| Cyperaceae | |
Carex oligocarpa var. paeninsulae
| (Naczi, E.L. Bridges & Orzell) D.B. Ward | Phytologia 94(3): 469 | 2012 |
| Cyperaceae | |
Carex oligocarpa var. sartwelliana
| Dewey | Amer. J. Sci. Arts, ser. 2 5(14): 176 | 1848 |
| Cyperaceae | |
Carex oligocarpa fo. subuniflora
| (Steud.) Kük. | Pflanzenr. IV. 20(Heft 38): 521 | 1909 |
| Cyperaceae | |
Carex oligocarpa var. thornei
| (Naczi) D.B. Ward | Phytologia 94(3): 469 | 2012 |
| Cyperaceae | |
Carex oligocarpa fo. triflora
| Peck | Rep. (Annual) Regents Univ. State New York New York State Mus. 47: 164 | 1894 |
| Cyperaceae | |
Carex oligocarpa var. van-vleckii
| Schwein. ex Dewey | Amer. J. Sci. Arts 10: 281 | 1826 |