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Classification System: APG IV

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

Familia: Juncaceae
Genus: Juncus
Species: Juncus ensifolius

Juncus ensifolius Wikstr., Kongl. Vetensk. Akad. Handl. 2: 274 (1823)

Juncus ensifolius var. major Hook., Fl. Bor.-Amer. 2: 191 (1840)
Juncus novikovii A.P.Khokhr., Byull. Glavn. Bot. Sada 172: 25 (1995)
Juncus oligocephalus Satake & Ohwi, Acta Phytotax. & Geobot., 2: 104 (1933)
Juncus xiphioides var. macranthus Engelm., Trans. Acad. Sci. St. Louis 2: 482 (1868)
Juncus xiphioides var. triandrus Engelm., Trans. Acad. Sci. St. Louis 2: 482 (1868)

Native distribution areas:

Continental: Northern America
'Regional: USA
USA (Alaska, Arizona, California, Colorado, Idaho, Montana, North Dakota, Nevada, New York, Oregon, South Dakota, Utah, Washington State, Wisconsin, Wyoming)
'Regional: Canada
Canada (Alberta, British Columbia, Ontario, Québec, Saskatchewan)
'Regional: Mexico
Mexico (Chihuahua, Coahuila, San Luis Potosi, Sonora, Veracruz)
Continental: Asia Temperate
'Regional: Eastern Asia
Russian Far East (Kuril Isl.); Japan (Hokkaido, Honshu)
Introduced into:
Austria, Belgium, Finland, Germany, Great Britain, Hawaii, Netherlands, New York, New Zealand North, New Zealand South, Ontario, Québec, Sweden, Transcaucasus, Vermont, Wisconsin

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

Wikstr. 1823. Kongl. Vetensk. Akad. Handl. 2: 274

Additional references

Kirschner, J. & al. (2002). Juncaceae Species Plantarum: Flora of the World 6-8: 1-237, 1-336,1-192. Australian Biological Resources Study, Canberra.


Govaerts, R. et al. 2022. Juncus ensifolius in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2022 Mar 06. Reference page.
Hassler, M. 2022. Juncus ensifolius. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2022. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2022 Mar 06. Reference page. 2022. Juncus ensifolius. Missouri Botanical Garden. Published online. Accessed: 06 Mar 2022.
International Plant Names Index. 2022. Juncus ensifolius. Published online. Accessed: Mar 06 2022.
USDA, ARS, Germplasm Resources Information Network. Juncus ensifolius in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Vernacular names
Deutsch: Schwertblättrige Binse
English: Swordleaf rush
suomi: Miekkavihvilä

Juncus ensifolius is a species of rush known by the common names swordleaf rush,[1] sword-leaved rush,[2] and three-stamened rush. It is native to much of western North America from Alaska to central Mexico, and into eastern Canada. It is present in Japan and far eastern Russia, and it has been introduced to many other regions of the world, including Europe, New Zealand, Hawaii, and Australia. It is a plant of wet areas in many types of habitat. This is a rhizomatous perennial herb forming clumps of stems 20 to 60 centimeters tall. The flat but curving leaves are mostly located at the base of the stems and are variable in length. The inflorescence is an array of many rounded clusters of many flowers each. Each flower has a number of dark brown to black tepals a few millimeters long and usually three small stamens enclosed between them. The fruit is an oblong capsule with a small beak on the tip.

USDA, NRCS (n.d.). "Juncus ensifolius". The PLANTS Database ( Greensboro, North Carolina: National Plant Data Team. Retrieved 22 January 2016.
BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.

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