Carex laeviconica

Dewey

Amer. J. Sci. Arts, ser. 2, 24: 47. 1857.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 500. Mentioned on page 499.

Culms trigonous in cross-section, (25–) 30–110 cm; vegetative culms hard, solid with parenchyma, taller than fertile culms. Leaves: basal sheaths reddish purple, inner bands fibrillose with age; sheaths with apex of inner band pale to dark-brown, translucent between veins, strongly veined, becoming ladder-fibrillose, glabrous, veins scabrous; ligules 2–12 (–17) mm; blades 3–6 mm wide, glabrous, not papillose abaxially. Inflorescences (9–) 15–65 cm; spikes erect or ascending; proximal 2–4 spikes pistillate; terminal 2–5 spikes staminate. Pistillate scales lanceolate to narrowly ovate, apex acute to acuminate, scabrous-awned, otherwise glabrous. Staminate scales lanceolate to narrowly ovate, apex obtuse to acuminate, occasionally with scabrous awn, glabrous. Perigynia 12–26-veined, (4.4–) 4.8–8.4 × 1.8–3.3 mm, glabrous or scabrous on veins; beak straight to slightly spreading, 1.7–3.8 mm, glabrous or sparsely scabrous-pubescent, teeth (0.8–) 1.1–2.3 mm.


Phenology: Fruiting May–Jul.
Habitat: Openings in bottomland and lowland forests, edges of marshes, lakes, and ponds, wet meadows, wet thickets, mesic to wet prairies and savannas
Elevation: 140–600 m

Distribution

V23 930-distribution-map.jpg

Man., Ont., Sask., Ill., Iowa, Kans., Minn., Mo., Mont., Nebr., N.Dak., S.Dak., Wis.

Discussion

Carex laeviconica is characteristic of wetlands in the northern Great Plains and western portions of the tallgrass prairie region.

Carex laeviconica hybridizes with C. trichocarpa.

Selected References

None.

Lower Taxa

None.

"taller" is not a number."less" is not a number.

... more about "Carex laeviconica"
trigonous +
smaller +
pubescent +  and glabrous +
pale +  and dark-brown +
A. A. Reznicek +  and Paul M. Catling +
shortened +
rounded +
straight +
scabrous-pubescent +  and glabrous +
bidentate +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
papillose +
m-shaped +  and flat +
3mm;6mm +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
redbrown +  and brown +
fertile +  and vegetative +
trigonous +
30 cm300 mm <br />0.3 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
acute +  and short-awned +
Man. +, Ont. +, Sask. +, Ill. +, Iowa +, Kans. +, Minn. +, Mo. +, Mont. +, Nebr. +, N.Dak. +, S.Dak. +  and Wis. +
140–600 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Openings in bottomland and lowland forests, edges of marshes, lakes, and ponds, wet meadows, wet thickets, mesic to wet prairies and savannas +
9 cm90 mm <br />0.09 m <br /> (15 cm150 mm <br />0.15 m <br />) +
15 cm150 mm <br />0.15 m <br /> (65 cm650 mm <br />0.65 m <br />) +
staminate +, prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
0.44 cm4.4 mm <br />0.0044 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.84 cm8.4 mm <br />0.0084 m <br />) +
scabrous +  and glabrous +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
Fruiting May–Jul. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Amer. J. Sci. Arts, ser. +
adventitious +
staminate +  and pistillate +
basal +  and proximal +
lanceolate;narrowly ovate +
ladder-fibrillose +  and veined +
shorter or longer +
cylindric +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
Illustrated +  and Endemic +
staminate +  and pistillate +
ascending +  and erect +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
persistent +
2-3(-4)-fid +
Carex laeviconica +
Carex sect. Carex +
species +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
plant +  and cespitose +