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Sparganium emersum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Typhaceae
Genus:	Sparganium
Species:	S. emersum
Binomial name
	Sparganium emersum; Rehmann
Synonyms
	List Sparganium acaule (Beeby ex Macoun) Rydb.; Sparganium angustifolium var. chlorocarpum (Rydb.) Brayshaw; Sparganium angustifolium subsp. emersum (Rehmann) Brayshaw; Sparganium angustifolium var. multipedunculatum (Morong) Brayshaw; Sparganium chlorocarpum Rydb.; Sparganium chlorocarpum var. acaule (Beeby ex Macoun) Fernald; Sparganium chlorocarpum f. acaule (Beeby ex Macoun) E.G.Voss; Sparganium chlorocarpum var. typicum R.T.Clausen; Sparganium diversifolium var. acaule (Beeby ex Macoun) Fernald & Eames; Sparganium emersum var. acaule (Beeby) A.Haines; Sparganium emersum subsp. acaule (Beeby ex Macoun) C.D.K.Cook & M.S.Nicholls; Sparganium emersum f. angustifolium (Morong) Soó; Sparganium emersum f. gracile (Meinsh.) Soó; Sparganium emersum var. multipedunculatum (Morong) Reveal; Sparganium emersum f. simile (Meinsh.) Soó; Sparganium emersum subsp. simplex (Huds.) Soó; Sparganium emersum f. submersum (Glück) Soó; Sparganium emersum f. subvaginatum (Meinsh.) Soó; Sparganium longissimum (Fr.) Fritsch; Sparganium multipedunculatum (Morong) Rydb.; Sparganium simile Meinsh.; Sparganium simplex Huds.; Sparganium simplex var. acaule Beeby; Sparganium simplex f. angustifolium C.L.Beckm.; Sparganium simplex var. multipedunculatum Morong; Sparganium subvaginatum Meinsh.; Sparganium wirtgeniorum (Graebn.) Rouy; ;

Sparganium emersum is a species of flowering plant in the cat-tail family known by the common names European bur-reed^[2] and unbranched bur-reed.^[3] It has a circumboreal distribution, occurring throughout the northern latitudes of Eurasia and North America. It is an aquatic plant, growing in shallow water bodies such as ponds and streams. It can become abundant at times. It is a perennial herb producing a floating stem up to 2 meters long. The leaves may be limp and floating or stiff and erect, emerging above the water surface. The leaves are flat and straplike, sometimes with a triangular, keeled base that can help distinguish it from the similar Sparganium angustifolium. It is monoecious, individual plants bearing both male and female inflorescences. These are spherical, the male inflorescence a ball of stamens and the female inflorescence a ball of developing fruits growing beneath the male spheres.

References

^ "Sparganium emersum Rehmann". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 23 December 2020.
^ NRCS. "Sparganium emersum". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 24 November 2015.
^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 26 June 2015. Retrieved 17 October 2014.

External links

This Poales-related article is a stub. You can help Wikipedia by expanding it.

[836755-1-1] "Sparganium emersum Rehmann". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 23 December 2020.

[2] NRCS. "Sparganium emersum". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 24 November 2015.

[BSBI07-3] BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 26 June 2015. Retrieved 17 October 2014.

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