''Carex viridula'', known as little green sedge, green sedge, or greenish sedge, is a small
flowering plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...
native to North America, Europe, Asia, and Morocco.
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Taxonomy
''Carex viridula'' is in the section
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''Carex'' sect. ''Ceratocystis'', a circumboreal
The Circumboreal Region in phytogeography is a floristic region within the Holarctic Kingdom in Eurasia and North America, as delineated by such geobotanists as Josias Braun-Blanquet and Armen Takhtajan.
It is the largest floristic region in t ...
group with around six other species, although the taxonomy of this group is controversial, and up to 19 species have been recognized.[
]Flora of North America
The ''Flora of North America North of Mexico'' (usually referred to as ''FNA'') is a multivolume work describing the native plants and naturalized plants of North America, including the United States, Canada, St. Pierre and Miquelon, and Greenla ...
accepts the following three subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...
and two varieties
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Films
* ''Variety'' (1925 film), a German silent film directed by Ewald Andre Dupont
* ''Variety'' (1935 film), ...
of ''Carex viridula'':[
*''Carex viridula'' subsp. ''brachyrrhyncha''
**''Carex viridula'' var. ''elatior''
**''Carex viridula'' var. ''saxilittoralis''
*''Carex viridula'' subsp. ''oedocarpa''
*''Carex viridula'' subsp. ''viridula''
, ]Kew
Kew () is a district in the London Borough of Richmond upon Thames. Its population at the 2011 census was 11,436. Kew is the location of the Royal Botanic Gardens ("Kew Gardens"), now a World Heritage Site, which includes Kew Palace. Kew is a ...
's Plants of the World Online
Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...
lists ''Carex viridula'' as a synonym of '' Carex oederi''.[
There is also variety ''Carex viridula'' var. ''bergrothii'' (Palmgr.) B.Schmid (synonym ''Carex bergrothii'' Palmgr.).]
Conservation status
It is listed as endangered in Connecticut
Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its cap ...
[ and ]Pennsylvania
Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
.[ It is listed as threatened in ]Illinois
Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ...
.[
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References
viridula
Flora of North America
Flora of Europe
Flora of Asia
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