Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
62. Cyperaceae, the Sedge Family
2. Carex L. -- Sedge
24. Carex hallii Olney
Loosely tufted from short rootstocks, also producing long rhizomes; culms
weakly trigonous below to sharply trigonous above, 1.5-4 dm long. Leaves
mainly basal, 1/4 to nearly as long as the culms, 1-3 mm wide; previous year's
leaves commonly persistent at the base. Spikes 1-5, the terminal one
staminate, pistillate or gynaecandrous, 1-2.5 cm long; lateral spikes usually
present, all pistillate, smaller than the terminal spike; bracts obsolete
to setaceous, not exceeding the head; pistillate scales brown with a
green midvein and scarious margins, obtuse to cuspidate, equaling to slightly
exceeding the perigynia. Perigynia green to brown, obovate, 1.5-2.3 mm
long, abruptly short-beaked, the beak 0.2-0.4 mm long, entire to bidentulate,
papillate and spinulose; achenes unequally trigonous, 1.2-1.7 mm long;
stigmas 3. Jun--Jul. Wet meadows, springs and seepage areas; occasional,
nw, c and e ND, e SD and c NE; (s Man., s to NE and CO).
Reports of C. parryana Dewey in ND are based on misidentifications
of C. hallii.
Previous Section -- Carex gynocrates Wormskj.
Return to Family -- Cyperaceae - The
Next Section -- Carex haydenii Dewey