Bulletin of the Torrey Botanical Club 27: 524. 1900.
Herbs, perennial, 2–10 dm. Rhizomes densely branching. Culms 1–20. Cataphylls 1–3. Leaves basal, 2–3; auricles yellowish, 0.2–0.4 mm, leathery; blade flat, 5–30 cm × 0.5–1 mm, margins entire, turned up, occasionally involute. Inflorescences compact and few flowered to loose and lax with to 80 flowers, 1.5–5(–9) cm; primary bract usually exceeding inflorescence. Flowers: bracteoles 2; tepals greenish, lanceolate, 4–5 mm; inner series nearly equal, spreading in fruit, nearly equal to or exceeding capsule; stamens 6, filaments 0.8–1.2 mm, anthers 0.6–1 mm; style 0.2 mm. Capsules tan, 1-locular to pseudo-3-locular, ellipsoid, 2.9–3.6 × 1.5–1.9 mm. Seeds tan to amber, ellipsoid to lunate, 0.4–0.67 mm, not tailed. 2n = ca. 84.
Phenology: Flowering and fruiting spring–early summer.
Habitat: Exposed or shaded sites in sandy to clayey soils, usually moist areas such as along stream banks, ditches, around springs
Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Mexico.