Carex atrata

Carex atrata, called black alpine sedge, is a widespread species of flowering plant in the genus Carex, native to Greenland,^[3] Iceland, and most of Europe, plus scattered locations across temperate Asia, including Anatolia, Siberia and the Himalaya, as far as Taiwan and Japan.^[4][2] Its chromosome number is 2n=52, with some variants reported, e.g. n2=54 for Greenland material.^[3][5]

Carex atrata
Botanical illustration, with Carex atrofusca on the left and Carex atrata on the right.
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Cyperaceae
Genus:	Carex
Species:	C. atrata
Binomial name
Carex atrata L.[1]
Synonyms[2]
Loxanisa atrata (L.) Raf. Trasus atratus (L.) Gray

Subspecies

The following subspecies are currently accepted:^[2]

• Carex atrata subsp. atrata
• Carex atrata subsp. longistolonifera (Kük.) S.Yun Liang
• Carex atrata subsp. pullata (Boott) Kük.