Schoenoplectus

Inflorescence apparently lateral. Spikelets sessile

Styles 2-fid. Culms up to 1 mm diam., terete or with 3 rounded angles

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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 Schoenoplectus erectus

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Perianth bristles at least as long as the nut, with reflexed hairs. Culms subterete, usually less than 30 cm high. Spikelets solitary, lateral, c. 4 mm long. Glumes pale brown. Nut plano-convex, smooth. Rarely collected. Nepean River and Manly Dam. Damp places. Probably introd. from Japan Schoenoplectus lineolatus