Plants stoloniferous. Cauline leaves 25-110 × 3-17 mm. Peduncles filiform; bracts subulate, 4-26 mm. Phyllaries subulate; outer 0.8-1.7 × 0.3-0.6 mm; inner 1.8-2.3 × 0.2-0.7. 2n = 18.

Flowering Jul-Nov. Prairies, waste places, roadside ditches, woodland borders, sunny to semishaded, dry to wet; 10-200 m; Ala., Ark., Fla., Ga., Ill., La., Miss., Mo., N.C., Okla., S.C., Tex.