Schoenoplectus erectus (Poir.) Palla ex J.Raynal

Perianth bristles absent or shorter than the nut. Culms terete up to 50 cm high. Spikelets 5–10 mm long, mostly 2–3 together in lateral clusters. Glumes reddish-brown towards the top. Nut plano-convex, rugose. Widespread. Damp places