Carex atrata

Linnaeus

Sp. Pl. 2: 976. 1753.

Illustrated
Treatment appears in FNA Volume 23. Treatment on page 404. Mentioned on page 403.

Plants loosely cespitose. Culms (10–) 30–40 (–60) cm, smooth. Leaves 3–5 mm wide. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes overlapping, erect or proximal spikes sometimes spreading, distinct, contiguous, short-pendunculate, short-oblong or elongate, 10–25 × 6–10 mm; lateral 2–4 (–6) spikes pistillate, pedunculate, of similar length; terminal spike gynecandrous. Pistillate scales dark-brown or black to margins, lanceolate, longer than and as broad as perigynia, midvein same color as body, inconspicuous or lighter in color and conspicuous, acute. Perigynia ascending, golden or dark-brown, veinless, ovate, 3–4 × 1.5–1.75 mm, apex abruptly beaked, distally papillose; beak 04–0.5 mm, bidentate, smooth. Achenes filling proximal 1/2 or less of perigynia. 2n = 54.


Phenology: Fruiting Jul–Aug.
Habitat: Herb-slopes, willow scrub, moist rock ledges, heaths
Elevation: 10–700 m

Discussion

For typification see I. Kukkonen (1980).

Carex atrata, in a restricted sense, though widely reported for North America, is present within the flora area in Greenland only.

Selected References

None.

Lower Taxa

None.
... more about "Carex atrata"
trigonous +
smaller +
papillose +
David F. Murray +
Linnaeus +
shortened +
cuneate +  and more or less rounded +
bidentate +
0.4 cm4 mm <br />0.004 m <br /> (0.05 cm0.5 mm <br />5.0e-4 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 +
papillose +  and smooth +
red +  and purple +
round +  and trigonous +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Greenland +  and Eurasia +
10–700 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Herb-slopes, willow scrub, moist rock ledges, heaths +
prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
inconspicuous +
with (1-)3-6(-30) bristles and/or scales +
dark-brown +  and golden +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.175 cm1.75 mm <br />0.00175 m <br />) +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
scale-like;,;thread-like +
ladder-fibrillose +  and veined +
purple +, tinged red +  and dotted +
short-pendunculate +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
spreading +  and erect +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
black without yellowbrown +  and brown +
adventitious +
black +  and dark-brown +
basal +  and proximal +
lanceolate +
cylindric +
Illustrated +
pedunculate +  and pistillate +
overlapping +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
2 +  and 3 +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Atratae +  and Carex sect. Microrhynchae +
Carex atrata +
Carex sect. Racemosae +
species +
pistillate +  and staminate +
stoloniferous +, rhizomatous +  and long +
plant +  and cespitose +