Aquatic and Wetland Vascular Plants of the Northern Great Plains
62. Cyperaceae, the Sedge Family
2. Carex L. -- Sedge1. Carex alopecoidea Tuckerm.
Tufted; culms stout, soft, 4-10 dm long, trigonous and sharply winged, flattened when pressed, 1.5-3 mm wide. Leaves 3-8 mm wide; sheaths tight, purple-dotted, not cross-rugulose ventrally. Spikes bisexual, androgynous, aggregated in heads 1.5-5 cm long; pistillate scales acuminate to cuspidate. Perigynia brownish-yellow at maturity, plano-convex, ovate, 3-4.5 mm long, rounded and spongy-thickened at the base, contracted into the beak which is 2/3 to as long as the body; achenes lenticular, 1.5-2 mm long; stigmas 2. Jun--Jul. Swamps, springs and stream banks; uncommon and local in e and n ND and e SD; (Que. and ME to Man., s to NJ, IN and IA).
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