Checklist » Cyperaceae » Carex aperta
Last updated 11/16/2009 by David Giblin.
Carex aperta Boott[FNA23, HC, HC2, SPNW]
Columbia sedge

Publication: Fl. Bor.-Amer. 2: 218, plate 219. 1839.

Origin: Native

selected vouchers: WTU

Notes: FNA23: "Carex aperta and C. haydenii appear to be a very closely related, allopatric pair of species that may not be closely related to other members of the section. This species-pair is distinguished by the inflated perigynia, the acute scales that are longer than the perigynia, and the unique chromosome number. Carex aperta is distinguished from C. haydenii by its rhizomatous habit, the dull brown achenes, and the entire beak. It is sometimes mistaken for the sympatric taxa that also lack veins on the perigynia, C. aquatilis and C. scopulorum; mature specimens can easily be identified by the inflated perigynia."

References: (none)

Synonyms & Misapplied Names:
Carex accedens T. Holm
Carex accutina L.H. Bailey var. tenuior L.H. Bailey
Carex aperta Boott var. umbrosa Kük.
Carex aperta Boott var. viridans Kük.
Carex stylosa C.A. Mey. var. virens L.H. Bailey
Carex turgidula L.H. Bailey