Cyperaceae

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Cyperaceae
Pycreus.jpg
Cyperus polystachyos flower head
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Juss.[1]
Genera

About 109 (not all listed here)

The Cyperaceae are a family of monocotyledonous graminoid flowering plants known as sedges, which superficially resemble grasses or rushes. The family is large, with some 5,500 species described in about 109 genera,[2] the largest being the Carex genus of "true sedges"[3][4] with over 2,000 species.[5] These species are widely distributed, with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges may be found growing in almost all environments, many are associated with wetlands, or with poor soils. Ecological communities dominated by sedges are known as sedgelands.

Features distinguishing members of the sedge family from grasses or rushes are stems with triangular cross-sections (with occasional exceptions) and leaves that are spirally arranged in three ranks (grasses have alternate leaves forming two ranks).[6][7][8]

Some well-known sedges include the water chestnut (Eleocharis dulcis) and the papyrus sedge (Cyperus papyrus), from which the Ancient Egyptian writing material was made. This family also includes cotton-grass (Eriophorum), spike-rush (Eleocharis), sawgrass (Cladium), nutsedge or nutgrass (Cyperus rotundus, a common lawn weed), and white star sedge (Rhynchospora colorata).

Selected genera

Broad-leaved cotton-grass (Eriophorum latifolium)
Carex Serotina

References

  1. Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  2. R. Govaerts & D. A. Simpson, with J. Bruhl, T. Egorova, P. Goetghebeur & K. Wilson (2007). Word Checklist of Cyperaceae: Sedges. Royal Botanic Gardens, Kew. ISBN 978-1-84246-199-0. <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. "Sedge family – definition and more from the free Mirriam-Webster Dictionary". Mirriam-Webster. Retrieved 25 December 2013.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. Milne, Lorus Johnson; Milne, Margery Joan Greene (1975). Living plants of the world. Random House. p. 301.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  5. Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  6. "Grasslike non-grasses". Backyard Nature. Retrieved December 30, 2014.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  7. Peter W. Ball, A. A. Reznicek & David F. Murray. "210. Cyperaceae Jussieu". In Flora of North America Editorial Committee. Magnoliophyta: Commelinidae (in part): Cyperaceae. Flora of North America. 23. Oxford University Press. ISBN 978-0-19-515207-4.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  8. Brian R. Speer (September 29, 1995). "Glumiflorae: More on Morphology". University of California, Berkeley. Retrieved March 23, 2007.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

External links