Carex disperma

Dewey

Amer. J. Sci. Arts 8: 266. 1824

Common names: Carex disperme
Illustrated
Synonyms: Carex tenella Schkuhr
Treatment appears in FNA Volume 23. Treatment on page 298. Mentioned on page 296.

Plants with loose, branching system of slender, pale brown rhizomes. Culms very slender, nodding, 15–60 cm, exceeding leaves, scabrid. Leaves: basal sheaths pale brown abaxially, inner band white-hyaline, truncate at summit; ligules broader than long; blades mid to dark green, flat, 15–30 × 0.75–1.5 mm, scabrid. Inflorescences 1.5–2.5 cm × 3–5 mm; proximal bract 5–20 mm; distal bracts scalelike. Spikes 2–4(–5), proximal separate, distal aggregate, globose, 3–5 × 2–4 mm. Pistillate scales white-hyaline with green center, ovate, narrower and shorter than perigynia, apex acuminate. Perigynia 1–6, pale green, often brown or even purplish in age, plump, 2.25–3 × 1.3–1.5 mm, membranous, shiny. Achenes red-brown, oblong-elliptic, 1.5–1.75 × 1 mm, glossy. 2n = 70.


Phenology: Fruiting May–Aug.
Habitat: Swamps, bogs, wet meadows, mossy and shady coniferous woods
Elevation: 0–3500 m

Distribution

V23 517-distribution-map.jpg

Greenland, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Calif., Colo., Conn., Idaho, Ind., Maine, Mass., Mich., Minn., Mont., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Oreg., Pa., S.Dak., Utah, Vt., Wash., Wis., Wyo., Eurasia.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Carex disperma"
Heikki Toivonen +
Carex disperme +
Greenland +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Calif. +, Colo. +, Conn. +, Idaho +, Ind. +, Maine +, Mass. +, Mich. +, Minn. +, Mont. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, S.Dak. +, Utah +, Vt. +, Wash. +, Wis. +, Wyo. +  and Eurasia. +
0–3500 m +
Swamps, bogs, wet meadows, mossy and shady coniferous woods +
Fruiting May–Aug. +
Amer. J. Sci. Arts +
Illustrated +
Carex tenella +
Carex disperma +
Carex sect. Dispermae +
species +