Carex viridula, known as little green sedge, green sedge, or greenish sedge, is a small flowering plant native to North America, Europe, Asia, and Morocco.[2]

Carex viridula
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Carex viridula var. viridula

Secure  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Carex
Section: Carex sect. Ceratocystis
Species:
C. viridula
Binomial name
Carex viridula

Taxonomy

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Carex viridula is in the section Carex sect. Ceratocystis, a circumboreal group with around six other species, although the taxonomy of this group is controversial, and up to 19 species have been recognized.[3][4]

Flora of North America accepts the following three subspecies and two varieties of Carex viridula:[2][5]

  • Carex viridula subsp. brachyrrhyncha
    • Carex viridula var. elatior
    • Carex viridula var. saxilittoralis
  • Carex viridula subsp. oedocarpa
  • Carex viridula subsp. viridula

As of December 2019, Kew's Plants of the World Online lists Carex viridula as a synonym of Carex oederi.[6]

There is also variety Carex viridula var. bergrothii (Palmgr.) B.Schmid (synonym Carex bergrothii Palmgr.).[7]

Conservation status

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It is listed as endangered in Connecticut[8] and Pennsylvania.[9] It is listed as threatened in Illinois.[9]

References

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  1. ^ NatureServe (3 December 2022). "Carex viridula Little Green Sedge". NatureServe Explorer (explorer.natureserve.org). NatureServe. Retrieved 29 December 2022.
  2. ^ a b Crins, William J. (2002). "Carex viridula". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 23. New York and Oxford: Oxford University Press. Retrieved 20 December 2019 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  3. ^ Crins, William J. (2002). "Carex sect. Ceratocystis". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 23. New York and Oxford: Oxford University Press. Retrieved 20 December 2019 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. ^ Jiménez-Mejías, Pedro; Luceño, Modesto; Martín-Bravo, Santiago (1 May 2014). "Species boundaries within the southwest Old World populations of the Carex flava group (Cyperaceae)". Systematic Botany. 39 (1): 117–131. doi:10.1600/036364414X677973. JSTOR 24546124. S2CID 85265989 – via ResearchGate.
  5. ^
  6. ^ "Carex viridula". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 20 December 2019.
  7. ^ "Carex bergrothii Palmgr". www.worldfloraonline.org. Retrieved 6 February 2021.
  8. ^ "Connecticut's Endangered, Threatened and Special Concern Species 2015" (PDF). State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved 19 December 2019.
  9. ^ a b NRCS (2014). "Carex viridula". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 19 December 2019.