Scirpus barbatusRottb. [family CYPERACEAE], (1773). [type as above]
Information
Slender tufted annual; stems 5–25 cm long and 0.2–0.4 mm thick, glabrous. Leaf-blades 1–10 cm long and 0.2–0.5 mm wide, scabrid on margin at least above; sheath with long slender hairs at its opening. Inflorescence a solitary terminal head of few–numerous spikelets, 3–15 mm in diam. Spikelets 3–8 x 1–1.5 mm, ovoid-lanceolate. Glumes 1.5–2 mm long, ovate, reddish brown with paler margin and usually green slightly excurrent scabrid midrib, glabrous or sparsely short-hairy. Stamen usually 1 only. Nutlet 0.5–0.7 mm long, obovate, triangular, light brown, smooth with isodiametric surface-cells; the style base persisting on the mature nutlet as a small knob.
