Carex breweri

Boott

Ill. Carex, 142, plate 455. 1867.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 571. Mentioned on page 570.
Revision as of 00:26, 30 July 2020 by imported>Volume Importer
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Rhizomes 2–3 mm thick. Culms 15–22 (–30) cm, 2.5–3 mm thick at base. Leaves: sheaths 2–3 cm, fronts often mottled dark-brown; blades flattened laterally, with 5–8 conspicuous air cavities, median groove inconspicuous, elliptic in cross-section, 10–20 (–25) cm × 0.6–1.2 mm. Inflorescences 1.4–2.5 cm × 7–12 mm, staminate portion 2–10 mm. Pistillate scales white medially, 3–5-veined, shorter and narrower than perigynia, leathery, apex acute to acuminate; proximal scales sometimes awned to 4 mm. Anthers 2–3 mm. Perigynia angles veined, shortly 3–10-veined on faces, sessile, broadly elliptic, 5–7 × 3–4.8 mm, base rounded, apex rounded; beak entire; rachilla longer than fruit. Stigmas 1–2 mm. Achenes stalked to 0.15 mm.


Phenology: Fruiting Aug–Sep.
Habitat: Dry rocky or gravel slopes
Elevation: above 2500 m in Calif., above 2000 m in Oreg.

Distribution

V23 1091-distribution-map.jpg

Calif., Nev., Oreg., Wash.

Discussion

Carex breweri occurs in the Sierra Nevada and Cascade Mountains north to Mt. Hood.

A. Cronquist (1969) considered Carex breweri and C. engelmannii conspecific; he distinguished them at the varietal level by a difference in pistillate scale characters. The correlated differences in perigynium shape and veins, the dimensions of most structures, and the foliar anatomy support their retention as distinct species.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."shorter and narrower" is not a number.

... more about "Carex breweri"
trigonous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
beaked +  and awned +
rounded;acute;acuminate +
Lisa A. Standley +
rounded +
entire +  and erose +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
flattened +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
conspicuous +
round +  and trigonous +
15 cm150 mm <br />0.15 m <br /> (22 cm220 mm <br />0.22 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Calif. +, Nev. +, Oreg. +  and Wash. +
above 2500 m in Calif., above 2000 m in Oreg. +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
mottled dark-brown +
biconvex +  and trigonous +
Dry rocky or gravel slopes +
1.4 cm14 mm <br />0.014 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
sessile +, 3-10-veined +  and veined +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
sessile +, stipitate +  and veinless +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Fruiting Aug–Sep. +
2-3(-4)-carpellate +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
3 (?) +  and 1 (?) +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ill. Carex, +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
adventitious +
3-5-veined +  and pistillate +
persistent +
basal +  and proximal +
2-keeled +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
cylindric +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Illustrated +  and Endemic +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
deciduous +
2-3(-4)-fid +
Carex breweri +
Carex sect. Inflatae +
species +
plant +  and cespitose +