Carex ursina

Dewey

Amer. J. Sci. Arts 27: 240, plate V, fig. 68. 1835.

Common names: Carex des ours
Illustrated
Treatment appears in FNA Volume 23. Treatment on page 316. Mentioned on page 312, 314.

Plants densely cespitose; rhizomes short. Culms often slightly curved, weak, 2–10 cm. Leaves: sheaths pale to mid brown abaxially, loose, inner band white-hyaline, concave at summit; ligules shorter than wide; blades usually pale to gray-green, flat at base, involute distally, 1–5 cm × 0.5–1.5 mm, exceeding culms. Inflorescences 0.4–1 cm × 3–6 mm; bracts inconspicuous, shorter than spikes. Spike 1 (–2), gynecandrous, closely approximate, containing 7–15 perigynia, obovoid or suborbicular, 4–7 × 4 mm. Pistillate scales chestnut-brown with lighter center and very narrow hyaline margins, broadly ovate, subequal to perigynia, apex obtuse. Perigynia closely appressed, graybrown to pale or mid brown, lightly or obscurely several-veined, ovate, 1.5–2 × 1.25 mm, widest near middle, subcoriaceous; beak short, entire. Achenes redbrown, obovate, 1.2 × 0.7–1 mm, dull to slightly glossy. 2n = 64.


Phenology: Fruiting Jul–Aug.
Habitat: Sandy, gravelly seashores in Arctic
Elevation: 0–10 m

Distribution

V23 553-distribution-map.jpg

Greenland, Man., N.W.T., Nunavut, Que., Yukon, Alaska, Eurasia

Discussion

Selected References

None.

Lower Taxa

None.

"widest" is not a number.

... more about "Carex ursina"
1.2 cm12 mm <br />0.012 m <br /> (?) +
dull +  and slightly glossy +
smaller +
0.7mm;1mm +
beaked +  and beakless +
papillose +  and smooth +
Heikki Toivonen +
shortened +
truncate +  and rounded +
inconspicuous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
usually pale +  and gray-green +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
v--shaped +
0.5mm;1.5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
inconspicuous +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex des ours +
round +  and trigonous +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Greenland +, Man. +, N.W.T. +, Nunavut +, Que. +, Yukon +, Alaska +  and Eurasia +
0–10 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Sandy, gravelly seashores in Arctic +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
angled;rounded +
with (1-)3-6(-30) bristles and/or scales +
graybrown +  and pale +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
spreading +  and ascending +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
subcoriaceous +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
Amer. J. Sci. Arts +
adventitious +
chestnut-brown +
basal +  and proximal +
subequal +
cylindric +
Illustrated +
approximate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
gynecandrous +
suborbicular;obovoid +
4 cm40 mm <br />0.04 m <br /> (?) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex ursina +
Carex sect. Glareosae +
species +
plant +  and cespitose +