Carex adusta

Boott in W. J. Hooker

in W. J. Hooker, Fl. Bor.-Amer. 2: 215. 1839

Common names: Carex brûlé
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 356. Mentioned on page 254, 333, 357.

Plants densely cespitose. Culms 25–80 cm. Leaves: sheaths adaxially hyaline, often green-veined nearly to collar, summits U- or V-shaped or rounded, sometimes prolonged to 1.5 mm beyond collar; distal ligules 1–4 mm; blades 2–5 per fertile culm, 7–25 cm × 2–3.5 mm. Inflorescences stiffly erect, dense or open, greenish brown to gold, 2–4.5 cm × 12–20 mm; proximal internode 2–15 mm; 2d internode 2.5–5 mm; proximal bracts leaflike, much longer than inflorescence, or bristlelike. Spikes 5–8(–11), usually distinct, broadly ovoid, 8–11 × 5–8 mm, base and apex acute to rounded. Pistillate scales reddish brown, with paler center, ovate to broadly ovate, 4–5.5 mm, equaling, ± covering perigynia, hyaline margin absent or to 0.2 mm, apex acute to mucronate. Perigynia ascending to spreading, green, gold, or cream colored, conspicuously 7–11-veined abaxially, conspicuously 0(–2)-veined adaxially, ovate to broadly ovate, plano-convex to biconvex, 4–5 × 1.9–2.5 mm, 0.7–1.1 mm thick, margin flat, including wing 0.2–0.6 mm wide, often thickened; beak gold at tip, flat, ciliate-serrulate, abaxial suture usually inconspicuous, distance from beak tip to achene 1.7–2 mm. Achenes obovate to elliptic, 2.1–2.5 × 1.6–2 mm, 0.7–1 mm thick. 2n = 78.


Phenology: Fruiting spring–summer.
Habitat: Dry, acidic, sandy soils of open woods and clearings, moist shores
Elevation: 0–400 m

Distribution

V23 620-distribution-map.jpg

Alta., B.C., Man., Nfld. and Labr. (Nfld.), N.S., Ont., Que., Sask., Maine, Mich., Minn., N.Y., Wis.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Carex adusta"
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Boott in W. J. Hooker +
Carex brûlé +
Alta. +, B.C. +, Man. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, Que. +, Sask. +, Maine +, Mich. +, Minn. +, N.Y. +  and Wis. +
0–400 m +
Dry, acidic, sandy soils of open woods and clearings, moist shores +
Fruiting spring–summer. +
in W. J. Hooker, Fl. Bor.-Amer. +
Illustrated +  and Endemic +
Carex adusta +
Carex sect. Ovales +
species +