Carex concinnoides


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

Common names: Northwest sedge
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


V23 1037-distribution-map.jpg

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


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


Lower Taxa

... more about "Carex concinnoides"
William J. Crins +
Mackenzie +
Northwest sedge +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Oreg. +  and Wash. +
60–2100 m +
Moist to dry, open pine, spruce, Douglas-fir, and aspen woods, often on slopes +
Fruiting spring–summer (late Apr–late Jul). +
Bull. Torrey Bot. Club +
Illustrated +  and Endemic +
Carex sect. Digitatae +
Carex concinnoides +
Carex sect. Clandestinae +
species +