Carex amplifolia

Boott in W. J. Hooker

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

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 487. Mentioned on page 486.

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"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
1mm;1.3mm +
scabrous +  and glabrous +
Theodore S. Cochrane +
Boott in W. J. Hooker +
shortened +
rounded +  and tapering +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
60 cm600 mm <br />0.6 m <br /> (80 cm800 mm <br />0.8 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
green +, glaucous +  and light +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
m--shaped +
wide;8mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
tinged reddish +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +
B.C. +, Calif. +, Idaho +, Mont. +, N.Mex. +, Oreg. +  and Wash. +
0–2400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
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) +
0.8 cm8 mm <br />0.008 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.3 cm3 mm <br />0.003 m <br /> (3 cm30 mm <br />0.03 m <br />) +
bidentate +
subsessile +  and short-pedunculate +
approximate +
with (1-)3-6(-30) bristles and/or scales +
collapsing +, 1-7-veined +  and veinless +
brownish green +
spreading +  and ascending +
longer to shorter +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
Fruiting late May–Sep. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
in W. J. Hooker, Fl. Bor.-Amer. +
adventitious +
basal +  and proximal +
2-keeled +
hispidulous +
cylindric +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Illustrated +  and Endemic +
40-470-flowered +, pistillate +  and staminate +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (14 cm140 mm <br />0.14 m <br />) +
narrowly oblong;slenderly cylindric +
5 cm50 mm <br />0.05 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex amplifolia +
Carex sect. Anomalae +
species +
0 cm0 mm <br />0 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
more prominent +
plant +  and cespitose +