Carex muskingumensis

Schweinitz

Ann. Lyceum Nat. Hist. New York 1: 66. 1824.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 365. Mentioned on page 337, 364.

Plants densely cespitose. Culms 40–100 cm; vegetative culms conspicuous, with spreading leaf-blades evenly along stem. Leaves: sheaths adaxially green-veined to within 3 mm of collar, adaxially firm, summits usually brown tinged, U or V-shaped, thick; distal ligules to 2 mm; blades 7–12 per fertile culm, 12–25 cm × 3–5 mm. Inflorescences open at least proximally, brown, (4–) 5–9 cm × 10–20 mm; proximal internode (4–) 5–15 mm; 2d internode (3–) 5–11 mm; proximal bracts scalelike. Spikes 5–12, distant, distinct, lanceoloid, 12–28 × 3.5–7 mm, bases tapered, apex acute. Pistillate scales white-hyaline or pale-brown with pale-brown midstripe, oblongovate, 4–5 mm, 1/2 length of and narrower than perigynia, apex acute. Perigynia appressed-erect, pale-brown, conspicuously 5–7-veined abaxially, conspicuously 3–7-veined adaxially, lanceolate, flat to planoconvex, 6–9 × (1.5–) 2–2.5 mm, 0.3 mm thick, margin flat, including wing 0.2–0.4 mm wide; beak tip flat, ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene 3.1–4.5 mm. Achenes elongate-oblong, 2–2.7 × 0.8–0.9 mm, 0.3 mm thick. 2n = 80.


Phenology: Fruiting early–mid summer.
Habitat: Moist to wet, deciduous flood plains, lowland woods, and thickets
Elevation: 100–400 m

Distribution

V23 641-distribution-map.jpg

Ont., Ark., Ill., Ind., Iowa, Kans., Ky., Mich., Minn., Mo., Ohio, Okla., Tenn., Wis.

Discussion

Selected References

None.

Lower Taxa

None.

"narrower" is not a number."+timesaslongasinflorescences" is not declared as a valid unit of measurement for this property."not undefined" is not a number.

... more about "Carex muskingumensis"
elongate-oblong +
smaller +
0.3 +  and 2-2.7×0.8-0.9 +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Schweinitz +
shortened +
persistent +
tapered +
not enlarged +
12 cm120 mm <br />0.12 m <br /> (25 cm250 mm <br />0.25 m <br />) +
7 (?) +  and 12 (?) +
v--shaped +
3mm;5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
conspicuous +
fertile +  and vegetative +
round +  and trigonous +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Ont. +, Ark. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Mich. +, Minn. +, Mo. +, Ohio +, Okla. +, Tenn. +  and Wis. +
100–400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist to wet, deciduous flood plains, lowland woods, and thickets +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.2mm +  and 0.4mm +
with (1-)3-6(-30) bristles and/or scales +
3-7-veined +  and 5-7-veined +
appressed-erect +
0.3 +, 2mm +  and 2.5mm +
Fruiting early–mid summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Ann. Lyceum Nat. Hist. New York +
adventitious +
pale-brown +  and white-hyaline +
basal +  and proximal +
2-keeled +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
distinct +
1.2 cm12 mm <br />0.012 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
lanceoloid +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
brown tinged +
v--shaped +  and u +
Carex muskingumensis +
Carex sect. Ovales +
species +
plant +  and cespitose +