Carex disperma

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Cladus: Commelinids
Ordo: Poales

Familia: Cyperaceae
Subfamilia: Cyperoideae
Tribus: Cariceae
Genus: Carex
Species: Carex disperma
Name

Carex disperma Dewey, Amer. J. Sci. Arts 8: 266 (1824).
Synonyms

Homotypic
Vignea disperma (Dewey) Raf., Good Book: 27 (1840).
Heterotypic
Carex tenella Schkuhr, Beschr. Riedgräs. 1: 23 (1801), nom. illeg.
Carex blyttii F.Nyl., Spic. Pl. Fenn. 2: 35 (1844).
Carex inops Kunze, Suppl. Riedgräs.: 131 (1844), pro syn.
Carex gracilis A.Gray, Amer. J. Sci. Arts, ser. 2, 4: 19 (1847), nom. illeg.
Carex misera Franch., Bull. Annuel Soc. Philom. Paris, sér. 8, 7: 51 (1895), nom. illeg.
Carex tenella var. misera Franch., Nouv. Arch. Mus. Hist. Nat., sér. 3, 8: 224 (1896).
Carex dominii H.Lév. & Vaniot, Bull. Acad. Int. Géogr. Bot. 19: 35 (1909).
Carex nakaii H.Lév., Bull. Acad. Int. Géogr. Bot. 19: 33 (1909).
Carex tenella var. brachycarpa Kük., Allg. Bot. Z. Syst. 15: 36 (1909).
Carex tenella var. nakaii (H.Lév.) H.Lév., Repert. Spec. Nov. Regni Veg. 7: 130 (1919).

Homonyms

Carex disperma Kunth, nom. illeg. = Carex jamesii Schwein.
Carex disperma Kunze ex J.Carey, nom. illeg. = Carex rosea Willd.

Distribution
Native distribution areas:

Continental: Temp. & Subarctic Northern Hemisphere
Alaska, Alberta, Amur, Arizona, Baltic States, Belarus, British Columbia, California, Central European Russia, Colorado, Connecticut, East European Russia, Finland, Greenland, Idaho, Illinois, Indiana, Inner Mongolia, Japan, Kamchatka, Korea, Labrador, Maine, Manchuria, Manitoba, Masachusettes, Michigan, Minnesota, Montana, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Dakota, North European Russia, Northwest European Russia, Northwest Territorie, Norway, Nova Scotia, Nunavut, Ohio, Ontario, Oregon, Pennsylvania, Poland, Primorye, Prince Edward I., Quebec, Sakhalin, Saskatchewan, South Dakota, South European Russia, Sweden, Utah, Vermont, Washington, West Siberia, Wisconsin, Wyoming, Yakutskiya, Yukon

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Dewey, C. 1824. American Journal of Science, and Arts. New Haven, CT 8: 266.

Links

Govaerts, R. et al. 2020. Carex disperma in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Jan 16. Reference page. 
International Plant Names Index. 2020. Carex disperma. Published online. Accessed: Jan 16 2020.
Govaerts, R. et al. 2020. Carex disperma in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Jan 16. Reference page. 
Tropicos.org 2020. Carex disperma. Missouri Botanical Garden. Published online. Accessed: 16 Jan 2020.
USDA, ARS, Germplasm Resources Information Network. Carex disperma in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Vernacular names
English: Two-seed Sedge
eesti: Õrn tarn
suomi: Hentosara
한국어: 가는사초

Carex disperma is a species of sedge known by the common names softleaf sedge or two-seed sedge.[1] It is native to much of the northern Northern Hemisphere, from Alaska to Greenland, most of Canada and the contiguous United States, and across Eurasia.
Description

Carex disperma grows in many types of wet habitat, such as swamps, meadows, and moist forest understory. This sedge produces thin, nodding stems up to 60 centimeters long from a network of branching rhizomes. The leaves are flat, green, and very narrow, less than 2 millimeters wide. The small open inflorescence is made up of 2 to 4 small rounded spikes.
References

Lee, Sangtae; Chang, Kae Sun, eds. (2015). English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. p. 390. ISBN 978-89-97450-98-5. Retrieved 6 March 2019 – via Korea Forest Service.