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.
Taxonomy 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.
Flora of North America accepts the following three subspecies and two varieties of Carex viridula:
Carex viridula subsp. brachyrrhyncha Carex viridula var. elatior Carex viridula var. saxilittoralis Carex viridula subsp. oedocarpa Carex viridula subsp. viridula
There is also variety Carex viridula var. bergrothii (synonym Carex bergrothii ).
Kew's Plants of the World Online considers Carex viridula a synonym of Carex oederi, and accepts two varieties: Carex oederi var. bergrothii Carex oederi var. oederi
Conservation status It is listed as endangered in Connecticut and Pennsylvania. It is listed as threatened in Illinois.
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