Carex wiegandii

Mackenzie

in N. L. Brittion et al., N. Amer. Fl. 18: 108. 1931.

Common names: Carex de Wiegand
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 328. Mentioned on page 326, 329.

Culms 10–105 cm. Leaves 3–8 per culm; sheaths tight, inner band hyaline, 4–23 cm, apex concave, ± glabrous; ligules rounded to obtuse, 0.9–2.5 mm; blades plicate, 11–45 cm × 1.7–5 mm, widest leaf 2.8–5 mm wide. Inflorescences (0.8–)1.5–3 cm; spikes 4–6; lateral spikes gynecandrous, 4.5–8 mm, sessile, staminate portion (0–)1–3-flowered, (0–)0.5–2 mm, pistillate portion 5–21-flowered, 3–8 mm; basal 2 spikes 1.3–9.5 mm apart; terminal spike androgynous, 6.1–14.5 mm, staminate portion 5–20-flowered, 2–8.6 × 0.8–1.3 mm, pistillate portion 7–25-flowered, 3–8 × 5–7.3 mm. Pistillate scales ovate, 1.45–2(–2.2) × 1.3–1.9 mm, apex obtuse to acute, sometimes shortly mucronate. Staminate scales ovate, 1.2–2.3 × 1.4–1.8 mm, apex obtuse to acute. Anthers 0.7–1.3 mm. Perigynia spreading to reflexed, green to castaneous, 5–18-veined abaxially, faintly 0–10-veined adaxially, broadly ovate, 2.55–3.75 × (1.25–)1.4–2(–2.1) mm, (1.4–)1.6–2.5 times as long as wide; beak 0.55–1.1(–1.35) mm, 0.25–0.55 length of body, serrulate, teeth 0.2–0.5 mm. Achenes ovate, 1.4–1.9 × 1.1–1.55 mm.


Phenology: Fruiting late spring–early summer.
Habitat: Bogs, openings in acidic conifer, mixed, or alder swamps, wet acidic sandy or peaty meadows
Elevation: 0–1300 m

Distribution

V23 583-distribution-map.jpg

St. Pierre and Miquelon, N.S., Nfld. and Labr., N.S., Ont., P.E.I., Que., Maine, Mass., Mich., N.H., N.Y., Pa., Vt.

Discussion

A putative hybrid between Carex wiegandii and C. echinata subsp. echinata has been collected in Michigan.

Selected References

None.

Lower Taxa

None.
... more about "Carex wiegandii"
A. A. Reznicek +
Mackenzie +
Carex de Wiegand +
St. Pierre and Miquelon +, N.S. +, Nfld. and Labr. +, Ont. +, P.E.I. +, Que. +, Maine +, Mass. +, Mich. +, N.H. +, N.Y. +, Pa. +  and Vt. +
0–1300 m +
Bogs, openings in acidic conifer, mixed, or alder swamps, wet acidic sandy or peaty meadows +
Fruiting late spring–early summer. +
in N. L. Brittion et al., N. Amer. Fl. +
Illustrated +  and Endemic +
Carex wiegandii +
Carex sect. Stellulatae +
species +