Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
62. Cyperaceae, the Sedge Family
2. Carex L. -- Sedge
13. Carex chordorrhiza Ehrh. ex L.f.
Culms arising singly or few together from the axils of dried leaves on
older, reclining culms, the old, sterile culms elongate, smooth and wiry, fertile
culms erect or nearly so, obtusely trigonous, 1-3 dm tall. Leaves 1-3
well-developed on each culm, the lower ones tending to be bladeless, blades
1-5 cm long on the fertile culms, to much longer on the sterile ones, 1-2 mm
wide; sheaths hyaline ventrally. Spikes 3-8, bisexual, androgynous, ovoid,
crowded in an oblong to ovoid head 5-15 mm long; bracts none; pistillate
scales deep brown, ovate, acuminate, about equaling the perigynia. Perigynia
brown, compressed-ovoid, 2-3.5 mm long, coriaceous, many-nerved on both faces,
obscurely margined; beak short, emarginate; achenes lenticular; stigmas
2. Jun--Aug. Wet sphagnum bogs; rare, with a record from Bottineau Co., ND;
(Circumboreal, in N.Amer. s to VT, NY, IN, n IA, n ND, Sask. and B.C.).
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