Annual or perennial sedges. Culms tufted,
erect, smooth. Leaves basal; linear, flat to canaliculated; ligule absent.
Involucral bract leaf like. Inflorescence capitate, terminal or pseudoterminal.
Spikes 1-8 per inflorescence ovoid. Spikelet small, sessile, terete, densely
many flowered. Glumes spirally imbricate, caducous, lower 1-2 empty. Flowers
bisexual. Perianth consisting of 2 scales. Stamens 1-2, anthers oblong-linear.
Style continuous with the ovary, stigmas 2-3. Nutlets obovate, ellipsoid to
narrowly cylindric, trigonous or plano-convex, smooth, reticulate, enclosed by
the hypogynous scales.