Cyperus fuscus - Brown Flatsedge

Brown Flatsedge is an annual herb, 10-30 cm, forming small clusters. Stem is 1-1.5 mm in diameter, trigonous, smooth. Leaves are basal, shorter than stem; sheaths 20-40 mm, brown or reddish brown, mouth margin concave Leaf blades are 2-3 mm wide, flat or keeled, margins smooth, tip long, trigonous, pointed, scabrous. Inflorescence is an irregular, spreading multiple spike, primary branches often up to 3 cm, with tubular prophyll, ending into cluster of up to about 50 spikes; lowest 2-3 bracts foliose, 3-10 cm, sheath-less, margins and midnerve below scabrous, base with scarious margins. Spikes 3-15 x 1.5-2 mm, compressed, tight, with 10-40 glumes; axis laterally compressed or four-edged, brown or, usually, dark reddish brown, shiny, almost straight, internodes about 0.5 mm. Brown Flatsedge is native to Macaronesia, Europe, Medit. to China, at altitudes of 100-2000 m. Flowering: June-August.