Carex cephalophora

Muhlenberg ex Willdenow

Sp. Pl. 4(1): 220. 1805.

Common names: Carex porte-tête
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 295. Mentioned on page 287, 293, 296.

Plants without conspicuous rhizomes. Culms 20–60 cm, 2–3.5 mm wide basally, 0.5–1 mm wide distally. Leaves: sheaths tight, green, rarely white spotted, fronts hyaline, slightly thickened at mouth; ligules to 5 mm, longer than wide; widest leaf-blades (1.9–) 2.5–5 mm wide. Inflorescences forming dense heads, with 3–8 spikes, 0.6–2 cm × 5–10 mm; proximal bracts 1–5 cm; spikes with 4–20 ascending to spreading perigynia. Pistillate scales hyaline with green midvein, ovate, 1–1.8 × 0.8–1.4 mm, body not more than 1/2 length of perigynium, apex acuminate to short-awned. Anthers 0.7–1.3 mm. Perigynia pale green to pale-yellow, veinless or to weakly 8-veined abaxially, 2.5–3.2 × 1.4–2 mm, body elliptic to circular, widest at 0.4–0.55 length of body, margins serrulate distally; beak 0.7–1.1 mm, apical teeth 0.3–0.5 mm. Achenes circular, 1 × 1 mm. 2n = 48.


Phenology: Fruiting late spring–early summer.
Habitat: Dry to wet-mesic deciduous or mixed forests, thickets, rarely open grassy habitats
Elevation: 50–500 m

Distribution

V23 510-distribution-map.jpg

Ont., Que., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Mass., Md., Mich., Minn., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., Wis.

Discussion

The record of Carex cephalophora from California is referable to C. mesochorea.

Selected References

None.

Lower Taxa

None.

"/" is not declared as a valid unit of measurement for this property."widest" is not a number.

... more about "Carex cephalophora"
1 cm10 mm <br />0.01 m <br /> (?) +
biconvex +
smaller +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Peter W. Ball +
Muhlenberg ex Willdenow +
shortened +
white-hyaline +, hyaline +  and narrow +
red tinged +  and brown +
rounded +
bidentate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
v--shaped +
0mm;20mm +
elliptic;circular +
0.4 +  and 0.55 +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex porte-tête +
round +  and trigonous +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
0.5mm;1mm +
Ont. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Mass. +, Md. +, Mich. +, Minn. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
50–500 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry to wet-mesic deciduous or mixed forests, thickets, rarely open grassy habitats +
, +  and racemose +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
longer than wide +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
veinless or +  and weakly 8-veined +
pale green +  and pale-yellow +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
ascending +  and spreading +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Fruiting late spring–early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
adventitious +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
basal +  and proximal +
0.8mm;1.4mm +
cylindric +
W2 +, Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex cephalophora +
Carex sect. Phaestoglochin +
species +
rhizomatous +  and short-rhizomatous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +