Carex platyphylla J.Carey
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Cyperaceae
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Scientific Name
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Description
Species Description - Tufted, 2–4 dm, the fertile stems lateral, roughened on the angles; basal sheaths white or light brown; lvs smooth, somewhat glaucous, those of the sterile shoots 10–25 mm wide, of the fertile shoots 2–6 mm wide; terminal spike staminate, 0.6–1.5 cm, on a peduncle 1–8 mm; pistillate spikes 2–4, 0.6–1.5 cm, scattered, the lowest one basal; pistillate scales apiculate or with an awn to 2 mm; perigynia 2–9, overlapping, 3–4.5 mm, finely many-nerved as well as 2-ribbed, sharply trigonous, elliptic in outline, rather abruptly contracted to the short, erect or outcurved beak with entire orifice; achene sharply trigonous; 2n=68, 70. Woods; Me. and s. Que. to Va. and in the mts. to N.C., w. to Wis. and Mo.