Aquatic and Wetland Vascular Plants of the Northern Great Plains
62. Cyperaceae, the Sedge Family
2. Carex L. -- Sedge
6. Carex bebbii Olney ex Fern.
Tufted; culms sharply trigonous, 1.5-8 dm long. Leaves shorter
to slightly longer than the culms, 1.5-4.5 mm wide; sheaths white-hyaline
ventrally. Spikes bisexual, gynaecandrous, 5-10, ovoid to subglobose,
5-8 mm long, closely aggregate in an ovoid head 1.5-2.5 cm long; bracts
of the inflorescence reduced and inconspicuous; pistillate scales acute
to acuminate, narrower and slightly shorter than the perigynia. Perigynia
green to brown, plano-convex, ovate, 2.5-3.5 mm long, finely nerved dorsally,
nerveless ventrally, narrowly wing-margined to the base; beak ca. 1/3 to 1/2
the entire length of the perigynium, serrulate, shallowly bidentate; achenes
lenticular, 1-1.5 mm long; stigmas 2. Jun--Aug. Wet meadows, marshes,
stream banks, floodplains, ditches and other wet places; frequent in the e part
and the Black Hills, less so in the c; (Newf. to B.C., s to NJ, OH, IL, NE and
CO).