Carex striatula Michx.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Tufted, 2–6 dm; fertile stems ascending, sharply triangular but not winged, smooth or nearly so; basal sheaths white or light brown; lvs of the sterile shoots 7–14 mm wide, of the fertile shoots somewhat narrower; terminal spike staminate, 2.5–3.5 cm, on a peduncle 0.5–12 cm; pistillate spikes 2 or usually 3, 2–6 cm, slender, on short to elongate ascending peduncles, scattered but none basal; pistillate scales acute to short-awned; perigynia 6–18, only slightly or scarcely overlapping, 3.5–5 mm, finely many-nerved as well as 2-ribbed, obtusely trigonous, fusiform, tapering to an ill-defined, often somewhat outcurved beak with an oblique, entire orifice; achene trigonous. Dry to mesic woods; L.I. and Pa. to Fla. w. to Tenn. and Tex. (C. laxiflora var. angustifolia) Perhaps properly to be included in C. laxiflora.