Carex oligocarpa Schkuhr ex Willd. - Rich Woods Sedge


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Carex oligocarpa - (image 1 of 2)



Family: Cyperaceae


Section Grisaea


Moist to mesic, often rocky woods, typically in lime rich loam.




MA, VT, southern Quebec, and Ontario to MN, south to FL and TX.


Tufted perennial; stems 20-80 cm, purplish at the base; leaves 2-4 mm wide; sheaths glabrous; bracts glabrous or rarely minutely granular-puberulent; staminate spike 1-3 cm, on a peduncle about as long as the uppermost pistillate spike; pistillate spikes 2-4, 5-20 mm, very loosely flowered; pistillate scales ovate, 3-6 mm, all or at least the lower with an awn longer than the body and usually longer than the perigynia; perigynia 7-12, alternately arranged, fusiform or slenderly ellipsoid, 3.5-5.4 mm, nearly straight, tapering almost equally to both ends, finely many-nerved; achene trigonous, filling the perigynium, with a minute straight beak.


Fruiting May to July

Wetland indicator: NA

The perigynia of specimens often turn a reddish-brown color after drying.


Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY




Michael Hough 2018