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Carex sylvatica Huds.  
Family: Cyperaceae
European Woodland Sedge
Carex sylvatica image
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Peter W. Ball & A. A. Reznicek in Flora of North America (vol. 23)
Plants densely cespitose. Culms pale brown to ivory at base, sometimes with a few brown fibrillose remains of previous year´s leaves, but not densely covered with fibrils; flowering stems 25-110(-200) cm, longer than leaves at maturity, 1-1.3 mm thick, glabrous. Leaves: sheaths glabrous, proximal ones ivory grading distally to light green, all bearing blades, pale hyaline on front; blades flat, (3-)5.5-8.5(-15) mm wide, glabrous on both surfaces, finely scabrous on margins. Inflorescences: peduncles of lateral spikes 5-20 mm, scabrous; peduncle of terminal spike less than 20 mm, scabrous; proximal bracts usually shorter than entire inflorescence; sheaths 20-100 mm; blades 2-3 mm wide. Lateral spikes: 3-5, 1 per node, the proximal well separated, erect to somewhat nodding, distal ones crowded near apex; proximal spikes pistillate with 15-40 spreading perigynia attached 1-1.5 mm apart, cylindric to elongate, 15-60 × 3-5 mm; distal spikes staminate or androgynous. Terminal spike staminate or androgynous with a few pistillate flowers at base, 15-40 × 2.5-3 mm. Pistillate scales white-hyaline with broad green midrib, oblong-lanceolate, shorter than mature perigynia, apex acute, cuspidate, or awned, glabrous. Perigynia green maturing to light brown, conspicuously 2-ribbed but otherwise veinless except for short inconpicuous veins at base, substipitate, tightly enveloping achene, obovoid, 4.5-6 × 1.4-1.8 mm, membranous, apex abruptly narrowed to tubular beak, glabrous; beak bidentate, slender, 2-3 mm, teeth 1 mm. Achenes sessile, 2.2-2.6 × 1.2-1.5 mm. 2n = 58 (Czechoslovakia, Germany, Great Britain, Iberian Peninsula, Poland, Sweden) Fruiting summer. Disturbed areas in deciduous forests; introduced; Ont.; N.Y., N.C.; Europe; introduced New Zealand. No hybrids are reported in the flora, although in Europe Carex sylvatica hybridizes with C. strigosa and C. hirta.

Vascular plants of NE US and adjacent Canada
Much like no. 147 [Carex arctata Boott]; perigynia 5-6 mm, the body sessile, obovoid, conspicuously 2-ribbed, otherwise nerveless, the beak slender and nearly as long as the body. Native of Europe, naturalized from L.I. to s. Ont.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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