Fl. Angl., 347. 1762.
Culms trigonous, scabrous-angled distally, 30–120 cm; vegetative culms somewhat taller. Leaves: basal sheaths brown; sheaths with inner band green, veined, apex hyaline, prolonged 0.7–3 mm; glabrous; ligules 1.8–16 mm; blades 1.8–5.2 mm wide. Inflorescences contracted near middle, 2–7 cm; spikes ascending, ovate, 4–16 × 1.2–9 mm, basal spikes larger than those near middle. Pistillate scales reddish-brown at maturity, hyaline margins very narrow or absent, ovate, acute to acuminate, glabrous. Staminate scales reddish-brown, narrowly ovate, apex acute to acuminate, glabrous. Perigynia (3.8–) 4–5.5 (–6.1) × 1.7–2.3 mm; beak (0.8–) 1–1.9 (–2.3) mm. Achenes brown.
Phenology: Fruiting Jun–Jul.
Habitat: Wet meadows, stream banks, disturbed areas
Elevation: 30–200 m
Introduced; Ont., Que., Eurasia
The Eurasian Carex disticha, thus far still a sporadic introduction, has been collected at two sites in Canada, both associated with ports on the Great Lakes-St. Lawrence system. A specimen to confirm a third, older report from near Belleville, Ontario, also on the Great Lakes, could not be located and verified (P. M. Catling et al. 1988).
"prolonged" is not a number."taller" is not a number.