Carex eburnea

Boott in W. J. Hooker

in W. J. Hooker, Fl. Bor.-Amer. 2: 226, plate 225. 1839.

Common names: Carex ivoirin
Illustrated
Treatment appears in FNA Volume 23. Treatment on page 554. Mentioned on page 553, 555.

Culms 7–31 cm. Leaf-blades involute, bristlelike, 3–21 cm × 0.2–1 mm. Inflorescences: proximal bract sheaths 2.5–8 mm; pistillate spikes 3–7 × 1.5–6 mm; staminate spikes 3–10 × 0.5–1.5 mm, inconspicuous. Scales: pistillate scales white-hyaline, with green or brown midvein, ovate to ovate-circular, 1–2 × 0.7–1.4 mm, shorter than or equaling perigynia; staminate scales, white-hyaline, with broad hyaline margins, elliptic-oblanceolate, 2.6–4 × 0.7–2 mm, apex obtuse or subacute. Anthers 1.3–1.8 mm. Perigynia light green becoming dark-brown and glossy, 1.5–2.2 × 0.7–1.1 mm; beak 0.2–0.4 (–0.5) mm. Achenes ellipsoidobovoid.


Phenology: Fruiting late spring–mid summer.
Habitat: Usually in conifer or mixed forests, occasionally fens, stable dunes and alvar, on neutral or calcareous substrates
Elevation: 0–2000 m

Distribution

V23 1053-distribution-map.jpg

Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., Que., Sask., Yukon, Ala., Alaska, Ark., Conn., Ill., Ind., Iowa, Ky., Maine, Mass., Mich., Minn., Mo., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Pa., S.C., S.Dak., Tenn., Vt., Va., W.Va., Wis., c Mexico

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Carex eburnea"
trigonous +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Peter W. Ball +
Boott in W. J. Hooker +
shortened +
tapering +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
v--shaped +
0mm;20mm +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex ivoirin +
not undefined +
round +  and trigonous +
7 cm70 mm <br />0.07 m <br /> (31 cm310 mm <br />0.31 m <br />) +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, Que. +, Sask. +, Yukon +, Ala. +, Alaska +, Ark. +, Conn. +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Mass. +, Mich. +, Minn. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Pa. +, S.C. +, S.Dak. +, Tenn. +, Vt. +, Va. +, W.Va. +, Wis. +  and c Mexico +
0–2000 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Usually in conifer or mixed forests, occasionally fens, stable dunes and alvar, on neutral or calcareous substrates +
prophyllate +, pedunculate +  and pistillate +
3 cm30 mm <br />0.03 m <br /> (21 cm210 mm <br />0.21 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
brown +  and green +
subentire +
with (1-)3-6(-30) bristles and/or scales +
light green becoming dark-brown +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
Fruiting late spring–mid summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
in W. J. Hooker, Fl. Bor.-Amer. +
adventitious +
staminate +  and pistillate +
white-hyaline +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
basal +  and proximal +
elliptic-oblanceolate;ovate;ovate-circular +
0.7mm;2mm +
cylindric +
Illustrated +
staminate +  and pistillate +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
inconspicuous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex eburnea +
Carex sect. Albae +
species +
plant +  and cespitose +