Carex intumescens

Rudge

Trans. Linn. Soc. London 7: 97, plate 9, fig. 3. 1804.

Common names: Carex gonflé
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 512. Mentioned on page 511, 513.

Plants cespitose or not, short-rhizomatous. Culms solitary or not, erect, (15–) 30–80 (–140) cm. Leaves 6–12; basal sheaths purplish red; sheath of distal leaf 0–1 (–2.5) cm; ligules rounded, 1–8 mm; blades 8–27 cm × 3.5–8 mm. Inflorescences 2–15 cm; peduncles of proximal pistillate spikes 0.3–1.5 cm, basal 2 peduncles 0.2–2.1 cm apart; of terminal spike 0.5–4 cm; bracts leafy, sheathless, blades 6–21 × 2–6 mm. Spikes: proximal pistillate spikes 1–4, often closely aggregated and difficult to distinguish, 1–12-flowered, ovoid to obovoid, 1–2.7 × 1–2.8 cm; terminal staminate spike 1, 1–5 cm × 1–3 mm. Pistillate scales 1–3-veined, lanceolate-ovate to ovate, 4–9.5 × 2–3.8 mm, apex acute to awned, awns rough, to 6.5 mm. Anthers 3, 2–4 mm. Perigynia ascending to spreading or the basalmost reflexed, strongly 13–23-veined, lanceoloid to ovoid, 10–16.5 × 2.5–6.5 mm, with satiny luster, glabrous; beak poorly defined, 2–4.2 mm. Achenes sessile, ellipsoid to obovoid, flat to convex faces, angles not thickened, 3.5–5.7 × (2.2–) 2.5–3.9 mm; style same texture as achene.


Phenology: Fruiting late spring–early summer.
Habitat: Dry-mesic to wet coniferous, mixed, and deciduous forests, forest openings, thickets, wet meadows, ditches
Elevation: 0–2000 m

Distribution

V23 955-distribution-map.jpg

Man., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis.

Discussion

Plants from the south of the species range and from lower elevations northward are usually more robust and have more inflated, ovoid perigynia than northern or high-elevation plants. The latter are sometimes distinguished as Carex intumescens var. fernaldii L. H. Bailey.

Selected References

None.

Lower Taxa

None.
... more about "Carex intumescens"
ellipsoid;obovoid flat +
smaller +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.57 cm5.7 mm <br />0.0057 m <br />) +
not thickened +
2.5mm;3.9mm +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
hairy +  and glabrous +
A. A. Reznicek +
0 cm0 mm <br />0 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
shortened +
cuneate +  and rounded +
bidentate +
0.2 cm2 mm <br />0.002 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
v--shaped +
2mm;6mm +
sheathless +  and leafy +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex gonflé +
brown +, reddish +  and purplish +
round +  and trigonous +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
prophyllate +, pedunculate +  and staminate +
Man. +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
0–2000 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry-mesic to wet coniferous, mixed, and deciduous forests, forest openings, thickets, wet meadows, ditches +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
septate-nodulose +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
1 cm10 mm <br />0.01 m <br /> (1.65 cm16.5 mm <br />0.0165 m <br />) +
reflexed +, ascending +  and spreading +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
Fruiting late spring–early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Trans. Linn. Soc. London +
adventitious +
1-3-veined +  and pistillate +
0.4 cm4 mm <br />0.004 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
basal +  and proximal +
lanceolate-ovate;ovate +
2mm;3.8mm +
shorter or longer +
septate-nodulose +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Illustrated +  and Endemic +
1-12-flowered +  and pistillate +
1 cm10 mm <br />0.01 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
ovoid;obovoid +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
persistent +
2-3(-4)-fid +
Carex intumescens +
Carex sect. Lupulinae +
species +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
plant +, not +  and cespitose +