Herbs, annual, cespitose. Culms 10-20(-30) cm, bases soft. Leaves: sheaths with ascending-hirtellous ribs; blades filiform, less than 0.5 mm wide, marginal and abaxial ribs ascending-hirtellous. Inflorescences in simple, open anthelae; scapes slightly wider than leaf blades, 0.5 mm diam., glabrous or hirtellous; longest involucral bract usually shorter than inflorescence. Spikelets usually few (3-9), 2-4 mm; fertile scales dark red brown or dull brown. Flowers: stamens 2-3; anthers 0.8 mm. Achenes slightly less than 1 mm. Fruiting summer-fall. Moist, sandy, open areas, bases of sandhills, moist savanna, flatwoods clearings; 0-200 m; Ala., Fla., Ga., Miss., N.C., S.C., Va.