Carex archeri

Rhizome long; shoots ± loosely tufted. Culms erect, slender, terete, smooth, 3–25 cm long, c. 0.5 mm diam. Leaves usually shorter than culms, 0.3–0.5 mm wide; sheath dark yellow-brown; ligule truncate to rounded. Inflorescence erect, 0.5–0.7 cm long, with 1 few-flowered spike; lowest involucral bract exceeding inflorescence. Spike short, with very short portion of male flowers above the few (3–6) female flowers; glumes obtuse to acute, red-brown with narrow hyaline margins; female glumes 2.5–4(–5) mm long; utricles stipitate, 3–5 mm long, c. 1 mm diam., ellipsoid to ovoid, ± falcate, nerveless or faintly nerved, glabrous or hispidulous on upper margins, red-brown to dark red-brown; beak 1–2.5 mm long, with apex notched; style 3-fid. Nut narrow-ellipsoid, trigonous, pale yellow-brown. Flowers summer.