Schoenoplectus mucronatus (L.) Palla ex Kern.
Leaf blades absent, plants 50–100 cm high. Culms yellow-green. Perianth bristles as long as or longer than the nut. Spikelet 7–10 mm long. Glumes acute. Nut plano-convex to trigonous. Widespread. Damp places. Uncommon