Carex concinnoides

Mackenzie

Bull. Torrey Bot. Club 33: 440. 1906.

Common names: Northwest sedge
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 548. Mentioned on page 545, 546, 547.

Plants loosely cespitose, long-rhizomatous. Culms 14–37 cm. Leaves: basal sheaths dark reddish-brown; blades mostly basal, pale green, shorter than culms, thick, 1.7–4.5 mm wide. Inflorescences: peduncles of proximal spikes short; peduncles of terminal staminate spikes 1.5–3 (–10) mm; proximal bracts short-sheathing; pistillate spikes 1–3, emerging from cauline nodes, aggregated, ascending, ovoid to short-cylindric; staminate spikes 8–22 × 1.8–3.1 mm. Scales: pistillate scales dark reddish-brown, ovate to obovate, apex obtuse to acute, minutely ciliate; staminate scales dark reddish to purplish brown, ovate to obovate, margins white, apex acute, scarious. Anthers 1.9–3.1 mm. Perigynia ellipsoid to obovoid, 2.5–3 × 1.4–1.7 mm, base tapering, pubescent with straight white hairs; beak 0.5 mm. Stigmas 4, erect or convolute, thick, weakly papillose. Achenes obovoid, 1.9–2.5 × 1.3–1.6 mm.


Phenology: Fruiting spring–summer (late Apr–late Jul).
Habitat: Moist to dry, open pine, spruce, Douglas-fir, and aspen woods, often on slopes
Elevation: 60–2100 m

Distribution

V23 1037-distribution-map.jpg

Alta., B.C., Calif., Idaho, Mont., Oreg., Wash.

Discussion

Carex cocinnoides is the only North American sedge with four stigmas per pistil. It is most similar to C. richardsonii; differs in its more closely aggregated, short-pedunculate pistillate spikes with very short-sheathing bracts. These close relatives are sympatric only at the northern and eastern edge of the range of C. concinnoides.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."thick" is not a number.

... more about "Carex concinnoides"
0.19 cm1.9 mm <br />0.0019 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1.3mm;1.6mm +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
awned +  and cuspidate +
glabrescent +  and pubescent +
acute;obtuse;acute +
scarious +
William J. Crins +
Mackenzie +
dark reddish-brown +
tapering +
straight +
0.5 cm5 mm <br />0.005 m <br /> (?) +
v--shaped +
0 cm0 mm <br />0 m <br /> (?) +  and 0.2 cm2 mm <br />0.002 m <br /> (?) +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Northwest sedge +
shorter or longer +
round +  and trigonous +
14 cm140 mm <br />0.14 m <br /> (37 cm370 mm <br />0.37 m <br />) +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Oreg. +  and Wash. +
60–2100 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist to dry, open pine, spruce, Douglas-fir, and aspen woods, often on slopes +
straight +
prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
emarginate +  and entire +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
stipitate +, veined +  and veinless +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
ascending +  and erect +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
Fruiting spring–summer (late Apr–late Jul). +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Bull. Torrey Bot. Club +
adventitious +
staminate +  and pistillate +
dark reddish +  and purplish brown +
basal +  and proximal +
ovate;obovate +
cylindric +
Illustrated +  and Endemic +
staminate +  and pistillate +
0.8 cm8 mm <br />0.008 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
ovoid;short-cylindric +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillose +
deciduous +
2-3(-4)-fid +
Carex sect. Digitatae +
Carex concinnoides +
Carex sect. Clandestinae +
species +
plant +  and cespitose +