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Very much like no. 54 [Carex interior L. H. Bailey]; stems scabrous on the angles above; lvs 0.5–4 mm wide; perigynia green, seldom castaneous, usually evidently several-nerved ventrally, 1.9–3.8 × 1.3–3 mm, 1.1–1.7 times as long as wide, broadly ovate to suborbicular, cuneately or somewhat concavely narrowed from the widest point to the sparsely and less conspicuously serrulate, sharply bidentate beak 0.5–1.2 mm. Swamps and bogs; N.S. to Fla., especially on the coastal plain, but also w. to Mich., Ill., Mo., Ark., and Tex. Var. atlantica, with nearly the range of the species, is relatively robust, with the widest lvs 1.5–4 mm, the infl mostly 1.8–4.5 cm, with 3–8 spikes, and the perigynia 2.3–3.8 ×1.5–3 mm. (C. incomperta) Var. capillacea (L. H. Bailey) Cronquist, mainly on the coastal plain, but also occasionally inland to O., s. Ont., s. Mich., and n. Ind., is smaller and more slender, with lvs 0.5–1.5 mm wide, the infl 0.8–2 cm with 2–5 spikes, the perigynia 1.9–3 × 1.3–2 mm. (C. howei)
