Carex atrata

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

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]

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.

References

1. Sp. Pl.: 976 (1753)
2. "Carex atrata L." Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 4 January 2021.
3. Grønlands flora. Tyge Wittrock Böcher (3. reviderede udgave ed.). København: P. Haase & Sons. 1978. ISBN 87-559-0385-1. OCLC 183098604.
4. "Carex atrata black alpine sedge". The Royal Horticultural Society. Retrieved 4 January 2021.
5. Rotreklová, Olga; Bureš, Petr; Řepka, Radomír; Grulich, Vít; Šmarda, Petr; Hralová, Ivana; Zedek, František; Koutecký, Tomáš (2011). "Chromosome numbers of Carex". Preslia. 83 (1): 25–58. Retrieved 4 January 2021.