Carex cephaloidea

(Dewey) Dewey

Rep. Herb. Fl. Pl., 262. 1840.

Common names: Carex céphaloïde
IllustratedEndemic
Basionym: Carex muricata var. cephaloidea Dewey Amer. J. Sci. Arts 11: 308. 1826
Synonyms: Carex sparganioides var. cephaloidea (Dewey) J. Carey ex A. Gray
Treatment appears in FNA Volume 23. Mentioned on page 297.

Plants without conspicuous rhizomes. Culms 30–120 cm, 2.5–4 mm wide basally, 0.7–1 mm wide distally. Leaves: proximal sheaths loose, longitudinally green-and-white-striped and green-and-white-mottled on back, with prominent transverse veins, fronts hyaline, transversely rugose; ligules 3–7 mm, slightly longer than wide; widest leaf-blades (4–) 5–8 mm wide. Inflorescences with 5–10 spikes, 1.5–4 cm × 8–10 mm; proximal internodes usually not more than 10 mm, 0.7–1.5 (–2) times as long as proximal spikes; proximal bracts to 2 cm; spikes with 6–20 ascending to spreading perigynia. Pistillate scales hyaline or pale-brown with green midvein, ovate-circular, 1.5–2 × 1.1–1.5 mm, 1/2 length of perigynia, apex subobtuse to acute. Anthers 0.7–1.3 mm. Perigynia green, with narrow wing not more than 0.1 mm wide distally, weakly 4–7-veined abaxially, 3–4.5 × 1.5–2.5 mm, margins serrulate distally; beak 1–1.3 mm, apical teeth 0.2–0.5 mm. Achenes suborbiculate, 1.6–2 × 1.3–1.7 mm. 2n = 50.


Phenology: Fruiting late spring–early summer.
Habitat: Dry to mesic deciduous and mixed forests and forest margins on neutral or basic soils
Elevation: 20–300 m

Distribution

V23 514-distribution-map.jpg

N.B., Ont., Que., Conn., Ill., Ind., Iowa, Maine, Mass., Mich., Minn., N.H., N.J., N.Y., Ohio, Pa., Vt., Wis.

Discussion

Selected References

None.

Lower Taxa

None.

No values specified.

... more about "Carex cephaloidea"
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
suborbiculate +
smaller +
1.3mm;1.7mm +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Peter W. Ball +
(Dewey) Dewey +
shortened +
white-hyaline +, hyaline +  and narrow +
red tinged +  and brown +
rounded +
Carex muricata var. cephaloidea +
bidentate +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex céphaloïde +
round +  and trigonous +
30 cm300 mm <br />0.3 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
0.7mm;1mm +
N.B. +, Ont. +, Que. +, Conn. +, Ill. +, Ind. +, Iowa +, Maine +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, Vt. +  and Wis. +
20–300 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry to mesic deciduous and mixed forests and forest margins on neutral or basic soils +
, +  and racemose +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
slightly longer than wide +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
ascending +  and spreading +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Fruiting late spring–early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.7-1.5(-2) times as long as proximal spikes +
Rep. Herb. Fl. Pl., +
adventitious +
pale-brown +  and hyaline +
basal +  and proximal +
2-keeled +
1.1mm;1.5mm +
cylindric +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sparganioides var. cephaloidea +
Carex cephaloidea +
Carex sect. Phaestoglochin +
species +
rhizomatous +  and short-rhizomatous +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +