Carex amplifolia

Boott in W. J. Hooker

in W. J. Hooker, Fl. Bor.-Amer. 2: 228, plate 226. 1839.

Treatment appears in FNA Volume 23. Treatment on page 487. Mentioned on page 486.
Revision as of 20:12, 16 December 2019 by FNA>Volume Importer

Culms tinged reddish at base, 50–100(–130) cm. Leaves: sheaths ± hispidulous abaxially; ligules 3–30(–65) mm; blades light or glaucous green, (10–)20–60(–80) cm × 8–20(–23) mm, those of sterile shoots to 20 mm wide, glabrous adaxially except on veins toward apex. Spikes 5–8, narrowly oblong to slenderly cylindric; proximal spikes separate, pedunculate, others approximate, short-pedunculate or subsessile; staminate spikes 5–9.5 cm; pistillate spikes mostly ca. 40–470-flowered (405–705-flowered if branched), (1.5–)3.5–14 cm × (2.5–)3.5–6.5 mm. Pistillate scales from longer to shorter than perigynia, the proximal short-awned, others acute (or all mucronate to awned), entire. Perigynia brownish green, 2-ribbed, otherwise veinless or inconspicuously 1–7-veined, obovoid, subinflated, collapsing and becoming obtusely triangular, 2.4–3.1 mm, glabrous; beak 0.7–1.1 mm, erose (scarcely bidentulate). Achenes broadly obovoid, 1.5–1.7 × 1–1.3 mm.


Phenology: Fruiting late May–Sep.
Habitat: Swamps, bogs, wet meadows, and other at least seasonally wet places, such as ditches and clearings, often along streams in conifer forests (western hemlock, Douglas fir, and Engelmann spruce zones, less often ponderosa pine stands)
Elevation: 0–2400 m

Distribution

V23 901-distribution-map.jpg

B.C., Calif., Idaho, Mont., N.Mex., Oreg., Wash.

Discussion

Carex amplifolia is confined to temperate western North America, where it is usually uncommon or rare from coastal lowlands to middle elevations in the mountains.

Selected References

None.

Lower Taxa

None.
... more about "Carex amplifolia"
Theodore S. Cochrane +
Boott in W. J. Hooker +
B.C. +, Calif. +, Idaho +, Mont. +, N.Mex. +, Oreg. +  and Wash. +
0–2400 m +
Swamps, bogs, wet meadows, and other at least seasonally wet places, such as ditches and clearings, often along streams in conifer forests (western hemlock, Douglas fir, and Engelmann spruce zones, less often ponderosa pine stands) +
Fruiting late May–Sep. +
in W. J. Hooker, Fl. Bor.-Amer. +
Carex amplifolia +
Carex sect. Anomalae +
species +