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Carex abrupta

Inflorescences of Carex abrupta from Hurd, E.G., N.L. Shaw, J. Mastrogiuseppe, L.C. Smithman, and S. Goodrich. 1998. Field guide to Intermountain sedges. General Technical Report RMS-GTR-10. USDA Forest Service, RMRS, Ogden. Courtesy of USDA FS RMRS Boise Aquatic Sciences Lab.

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 abrupta

Carex abrupta Mack., Bull. Torrey Bot. Club 43: 618 (1916 publ (1917)).
Native distribution areas:

Continental: Northern America
Regional: Northwestern U.S.A.
Idaho, Oregon.
Regional: Southwestern U.S.A.
California, Nevada.

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

Mackenzie, K.K. 1917. Bulletin of the Torrey Botanical Club. New York 43: 618.


Govaerts, R. et al. 2019. Carex abrupta in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2019 Dec 13. Reference page.
International Plant Names Index. 2019. Carex abrupta. Published online. Accessed: Dec 13 2019. 2019. Carex abrupta. Missouri Botanical Garden. Published online. Accessed: 13 Dec 2019.
USDA, ARS, Germplasm Resources Information Network. Carex abrupta in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Vernacular names
English: abruptbeak sedge
Carex abrupta is a species of sedge known by the common name abrupt-beaked sedge or abruptbeak sedge. It is native to the western United States from California to Idaho, where it grows in moist mountain habitat such as meadows.
This sedge forms a dense, erect clump exceeding 20 centimeters in height. The inflorescence is a rounded cluster of spikes 1 to 2 centimeters wide. Each fruit is surrounded by a sac called a perigynium which is boat-shaped to scoop-shaped with a very narrow, cylindrical beak coppery red to dark brown in color.

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