Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
62. Cyperaceae, the Sedge Family
2. Carex L. -- Sedge
19. Carex emoryi Dewey
Loosely tufted from long scaly rhizomes; culms trigonous, 4-10 dm long,
exceeding the leaves, smooth to rough. Leaves green, 2-5 mm wide, the
lower ones bladeless, merely sheathing the base of the culms; leaf sheaths
white-hyaline ventrally, white to yellow-tinged dorsally, the lower ones dark
red to brown, not shredding into ladderlike fibers; ligule at juncture of blade
and sheath truncate to rounded, as wide as or wider than long. Spikes
3-7, the terminal 1 or 2 staminate, 2-4.5 cm long, the lateral ones pistillate
or androgynous, 2-10 cm long; lowest bract leaflike, sheathless; pistillate
scales blunt to acuminate, narrower than the perigynia. Perigynia
light green, becoming stramineous at maturity, whitish-papillate only at the
apex, biconvex, elliptic or ovate-elliptic, 1.6-2.9 mm long, 1/2 to 3/5 as wide;
beak to 0.2 mm long, entire; achenes lenticular, ca. 1.5 mm long; stigmas
2. Late May--Jul. Shores, stream banks, wet meadows and seepage areas; frequent;
(NY and NJ to Man., s to FL, TX and NM).
See note under C. stricata.
Previous Section -- Carex disperma Dewey
Return to Family -- Cyperaceae - The
Next Section -- Carex garberi Fern.