Carex flava L.
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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, 1–8 dm; lvs flat, mostly 3–5.5 mm wide, the plants appearing leafier than no. 153 [Carex viridula Michx.]; terminal spike sessile or short-pedunculate, slender, staminate or with some distal perigynia, 6–24 mm; lateral spikes 2–5, pistillate, short and stout, 6–17 mm, all sessile or short-pedunculate and crowded at the summit, or 1 or 2 of the lower ± remote and more evidently pedunculate; bracts sheathless or nearly so (except those subtending any remote spikes), one or more of them with an elongate blade much surpassing the infl; pistillate scales strongly tinged with coppery brown, thus conspicuous in the spike; perigynia 3.7–6.2 mm, most of them spreading and evidently falcate-recurved, relatively slender and gradually tapering to the poorly defined, distally rough-margined beak, this 1.4–2.3 mm, set at a ± divergent angle to the body; perigynium-body strongly yellowish toward the base, usually more greenish (or eventually brownish) distally, prominently several-nerved on the upper surface, more obscurely so on the lower, achene hardly larger than in no. 153, a larger part of the perigynium thus empty; 2n=60, 64, 68, 70. Bogs and wet meadows in calcareous districts; circumboreal, s. in Amer. to N.J., Ind., Ida., and B.C. (C. laxior)