Carex nigricans

C. A. Meyer

Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 1: 211, plate 7. 1831.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 530. Mentioned on page 529.

Plants loosely cespitose, mat-forming; rhizomes short, stout. Culms 5–30 cm. Leaves flat to the tip, (1.5–) 2–4 mm wide. Pistillate scales reddish-brown to black, lanceolate, as broad and as long as or slightly longer than perigynia, margins not hyaline or scarious, apex acute to acuminate. Perigynia ascending to spreading and deflexed at maturity, 3.8–4.1 (–5) × 1–1.2 mm; beak dark-brown to black, frequently as long as body of perigynium. Stigmas 3.2n = 72.


Phenology: Fruiting Jul–Aug.
Habitat: Moist meadows, mossy heaths, wet gravels of streams and snowbeds
Elevation: 90–3400 m

Distribution

V23 995-distribution-map.jpg

Alta., B.C., Alaska, Calif., Colo., Mont., Oreg., Utah, Wash., Wyo.

Discussion

The occurrence of Carex nigricans in Russia, although expected, is unconfirmed by specimens, according to T. V. Egorova (1999).

Selected References

None.

Lower Taxa

None.

... more about "Carex nigricans"
trigonous +
smaller +
David F. Murray +
C. A. Meyer +
shortened +
rounded +, lanceolate +  and broadly lanceolate rounded-trigonous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
bidentate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
1.5mm +  and 4mm +
round +  and trigonous +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Alta. +, B.C. +, Alaska +, Calif. +, Colo. +, Mont. +, Oreg. +, Utah +, Wash. +  and Wyo. +
90–3400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist meadows, mossy heaths, wet gravels of streams and snowbeds +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
not hyaline +
with (1-)3-6(-30) bristles and/or scales +
0.41 cm4.1 mm <br />0.0041 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.41 cm4.1 mm <br />0.0041 m <br />) +
deflexed +, ascending +  and spreading +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans +
inconspicuous +
adventitious +
reddish-brown +  and black +
deciduous +
basal +  and proximal +
lanceolate +
cylindric +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Callistachys +
Carex nigricans +
Carex sect. Dornera +
species +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
plant +, mat-forming +  and cespitose +