| Cyperaceae | |
Carex orbicularis subsp. altaica
| (Gorodkov) T.V. Egorova | Novosti Sist. Vyss. Rast. (New Delhi) 22: 54 | 1985 |
| Cyperaceae | |
Carex orbicularis var. brachylepis
| (Regel) Kük. | Pflanzenr. IV. 20(Heft 38): 304 | 1909 |
| Cyperaceae | |
Carex orbicularis var. bulungensis
| Ostenf. | Bot. Tidsskr. 28: 230 | 1907 |
| Cyperaceae | |
Carex orbicularis var. caucasica
| Ö. Nilsson | Fl. Turkey & E. Aegean Isl. 9: 623 | 1985 |
| Cyperaceae | |
Carex orbicularis subsp. kotschyana
| (Boiss. & Hohen.) Kukkonen | Ann. Bot. Fenn. 21: 389 | 1984 |
| Cyperaceae | |
Carex orbicularis subsp. orbicularis
| | | |
| Cyperaceae | |
Carex orbicularis var. petunnikowii
| (Litv.) O. Fedtsch. | Trudy Glavn. Bot. Sada, n.s. 38(1): 200 | 1924 |
| Cyperaceae | |
Carex orbicularis var. taldycola
| (Meinsh.) Kük. | Pflanzenr. IV. 20(Heft 38): 304 | 1909 |