Carex nigra is a perennial species of plant in the sedge family Cyperaceae.

[4] Carex nigra is a tussock-forming, evergreen perennial sedge, reaching up to 70cm in height.

[5] Flower spikes and seed heads are purplish-black, appearing in early to late summer.

[7] The eastern limit of its range reaches central Siberia, Turkey and the Caucasus.

[8] It favours marshes, wetlands and alkaline fens.