Carex atrata explained

Carex atrata, called black alpine sedge, is a widespread species of flowering plant in the genus Carex, native to Greenland,^[1] Iceland, and most of Europe, plus scattered locations across temperate Asia, including Anatolia, Siberia and the Himalaya, as far as Taiwan and Japan.^{[2] [3]} Its chromosome number is 2n=52, with some variants reported, e.g. n2=54 for Greenland material.^[4]

Subspecies

The following subspecies are currently accepted:^[3]

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

Notes and References

1. Book: Grønlands flora. 1978. P. Haase & Sons. Tyge Wittrock Böcher. 87-559-0385-1. 3. reviderede udgave. København. 183098604.
2. Web site: Carex atrata black alpine sedge . The Royal Horticultural Society . 4 January 2021 .
3. Web site: Carex atrata L. . . 2017 . Plants of the World Online . Board of Trustees of the Royal Botanic Gardens, Kew . 4 January 2021 .
4. 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 . 4 January 2021 .