Carex thurberi

Dewey in W. H. Emory

in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 232. 1859.

Illustrated
Treatment appears in FNA Volume 23. Treatment on page 510. Mentioned on page 502, 508.

Plants densely to loosely cespitose; rhizomes short, no more than 10 cm. Culms trigonous in cross-section, 40–100 cm, scabrous-angled distally. Leaves: basal sheaths reddish purple; ligules longer than wide; blades pale to mid green, flat to W-shaped, 3.5–9 mm wide, glabrous. Inflorescences 6–25 cm; proximal bract 15–40 cm, exceeding inflorescence; proximal 3–4 spikes pistillate, erect or the proximal spreading; terminal 1–2 spikes staminate. Pistillate scales ovate, obtuse to acuminate, 2–4.4 (–5.1) × 0.7–1.3 mm, shorter than perigynia, margins erose, apex contracted, scabrous-awned, awn mostly shorter than body. Staminate scales scabrous-awned, sometimes also ciliate-margined. Perigynia ascending, ca. 13–25-veined, veins separated by 3+ times their width, confluent at or proximal to mid beak (except for 2 prominent lateral), narrowly elliptic, 3.1–4.8 × 0.9–1.5 (–1.8) mm, herbaceous, apex tapered; beak 0.9–1.8 mm, smooth, bidentulate, teeth straight, 0.4–0.9 mm. Stigmas 3. Achenes yellow to pale-brown, trigonous, smooth.


Phenology: Fruiting May–Aug.
Habitat: Stream banks, springheads, seeps, wet meadows
Elevation: 1100–1800 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Carex thurberi"
yellow +  and pale-brown +
trigonous +
awned +  and awnless +
not papillose +
A. A. Reznicek +  and Bruce A. Ford +
Dewey in W. H. Emory +
shortened +
not +  and fibrous +
truncate +  and rounded +
Vesicariae +
bidentulate +
emarginate +  and bidentate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
green +  and pale +
flat +  and w-shaped +
3.5mm;9mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
brown +, reddish-brown +  and reddish purple +
scabrous-angled +  and trigonous +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Ariz. +  and Mexico +
1100–1800 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Stream banks, springheads, seeps, wet meadows +
6 cm60 mm <br />0.06 m <br /> (25 cm250 mm <br />0.25 m <br />) +
prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
longer than wide +
with (1-)3-6(-30) bristles and/or scales +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Fruiting May–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
short-sheathed +, sheathless +  and leaflike +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
in W. H. Emory, Rep. U.S. Mex. Bound. +
adventitious +
ciliate-margined +, staminate +  and pistillate +
0.44 cm4.4 mm <br />0.0044 m <br /> (0.51 cm5.1 mm <br />0.0051 m <br />) +
green +  and dark-brown +
0.2 cm2 mm <br />0.002 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
basal +  and proximal +
obtuse;acuminate +
0.7mm;1.3mm +
septate-nodulose +
Illustrated +
staminate +  and pistillate +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
persistent +
2-3(-4)-fid +
Carex thurberi +
Carex sect. Vesicariae +
species +
straight +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
0.9mm +  and 1.5mm +
plant +  and cespitose +