Carex meadii

Dewey

Amer. J. Sci. Arts 43: 90, plate Cc, fig. 94. 1842.

Illustrated
Synonyms: Carex tetanica var. meadii (Dewey) L. H. Bailey
Treatment appears in FNA Volume 23. Mentioned on page 431.

Plants colonial, long-rhizomatous, vegetative shoots widely scattered and inconspicuous from deep rhizomes. Culms 15–60 cm, usually scabrous distally. Leaves: proximal sheaths with blades, brownish, 1.5–5 mm diam.; ligules 0.4–3.6 mm, 0.4–1.2 times wider than long; blades gray-green, flat, 7–15 cm × 2–5 (–7) mm, folded near bases, margins often revolute, herbaceous. Inflorescences 4–25 cm, 1–1.6 times as long as proximal bracts; proximal bract 2.5–20 cm, sheath 0.5–4 cm, blade 2–16 cm; pistillate spikes ovoid to cylindric, 6–37 × 3.5–8 mm; lateral spikes erect or ascending on stiff peduncles. Pistillate scales purple-tinged or brown, apex awned or obtuse. Perigynia ascending to spreading, densely arranged, yellow-green to brown, 2.3–5 × 1.25–2.5 mm, minutely papillose; beak minute, bent. Achenes light to dark-brown, 2.7–4 × 1.7–2.2 (–2.5) mm.


Phenology: Fruiting late spring–early summer.
Habitat: Calcareous prairies, fens, cedar glades, open woodlands, moist depressions
Elevation: 50–2400 m

Distribution

V23 790-distribution-map.jpg

Man., Ont., Sask., Ala., Ark., Ariz., Ga., Ill., Ind., Iowa, Kans., Ky., Mich., Minn., Miss., Mo., Nebr., N.J., N.C., N.Dak., Ohio, Okla., Pa., R.I., S.Dak., Tenn., Tex., Va., Wis., Mexico

Discussion

Separating Carex meadii and C. tetanica can be problematic, particularly in the Great Lakes region where they seem to integrade with each other. Carex meadii, the more wide-ranging taxon, can tolerate drier habitats. In addition to the characters in the key, C. meadii tends to be a coarser plant with more grayish green leaves, shorter peduncles (bearing the staminate and proximal pistillate spikes), and thicker spikes. The perigynia, including the proximal ones, are strongly aggregated and borne in more ranks within the spike. Also, the beaks of C. meadii may be more distinct and sharply curved.

Due to confusion with Carex meadii, the geographic range of C. tetanica is not fully known.

Selected References

None.

Lower Taxa

None.
... more about "Carex meadii"
0.22 cm2.2 mm <br />0.0022 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
light +  and dark-brown +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
trigonous +
smaller +
1.7mm;2.2mm +
not septate-nodulose +
not +  and beaked +
papillose +  and smooth +
Paul E. Rothrock +  and A. A. Reznicek +
shortened +
tapering +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
minute +
0 cm0 mm <br />0 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
7 cm70 mm <br />0.07 m <br /> (15 cm150 mm <br />0.15 m <br />) +
m--shaped +
2 cm20 mm <br />0.02 m <br /> (?) +  and 16 cm160 mm <br />0.16 m <br /> (?) +
2mm;5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
purple +  and brown +
round +  and trigonous +
15 cm150 mm <br />0.15 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Man. +, Ont. +, Sask. +, Ala. +, Ark. +, Ariz. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.J. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Pa. +, R.I. +, S.Dak. +, Tenn. +, Tex. +, Va. +, Wis. +  and Mexico +
50–2400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Calcareous prairies, fens, cedar glades, open woodlands, moist depressions +
1-1.6 times as long as proximal bracts +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +
prophyllate +, pedunculate +  and pistillate +
ascending +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
1/(0.4-1.2) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
bidentate +  and entire +
with (1-)3-6(-30) bristles and/or scales +
sessile +  and veined +
yellow-green +  and brown +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
ascending +  and spreading +
0.125 cm1.25 mm <br />0.00125 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Fruiting late spring–early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
long-sheathing +  and leaflike +
2.5 cm25 mm <br />0.025 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Amer. J. Sci. Arts +
adventitious +
brown +  and purple-tinged +
basal +  and proximal +
2-keeled +
cylindric +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
inconspicuous +
Illustrated +
0.6 cm6 mm <br />0.006 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
ovoid;cylindric +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex tetanica var. meadii +
Carex meadii +
Carex sect. Paniceae +
species +
plant +  and colonial +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +