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valley sedge
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dark mountain sedge, nearlyblack sedge
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| Plants cespitose or very short-rhizomatous, 12–60 cm tall; plant bases light brown or warm tan. |
Plants rhizomatous, the rhizomes 1 mm thick; culms 5–20 cm tall. |
blades 1–3 mm wide, inconspicuously papillose ventrally. |
sheath fronts uniformly pale brown or colorless; blades 0.4–1 mm wide; round to semicircular in cross section. |
0.5–3 cm × 4–8 mm; spikes 5–10; short, crowded, androgynous. |
spike solitary, androgynous, 0.7–2 cm × 4–6 mm, lacking an inflorescence bract. |
oval, 3.3–4 × 1.8–2.3 mm, light brown; shiny, broadly rounded on the dorsal side so that the 2 marginal ribs appear to be on the flat ventral surface, with several (7–15) more or less obscure dorsal veins and no ventral veins; base more or less spongy, 0.7–1 mm long, drying wrinkled; tip abruptly contracted to the beak; beak 0.5–1 mm long; smooth-margined or serrulate; stigmas 2. |
elliptic, 2.5–3.5 × 1.5 mm, ascending, brown above; darker brown through the middle; and pale below; veinless, with rachilla shorter than the achene; stigmas 3. |
lenticular. |
trigonous; much smaller than the perigynium. |
slightly shorter than or as long as the perigynia; whitish or pale brown hyaline with green center; apex acute or short-awned. |
about as wide as the perigynia but shorter, 1-veined; yellowish brown; apex obtuse to acute; flat, not awned. |
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Mesic depressions and slopes in dry grasslands or sage steppes, often in thickets or aspen stands, generally in gravelly loam, often with big sage (Artemisia tridentata). 1300–2300 m. BR, BW, Est, Lava, Owy. CA, ID, NV, WA; north to British Columbia, east to SD, south to NM and Mexico. Native. Carex vallicola is a cespitose sedge with a fairly narrow inflorescence composed of short spikes. Its shiny, plump perigynia have the marginal veins displaced to the ventral side. It oftengrows with C. hoodii, which has darker, more compact inflorescences and perigynia that have ribs at the margins where they belong and are green with copper centers (light brown with dark brown centers when fully mature). |
Moist, rocky, alpine to subalpine slopes and meadows. 2300–2800 m. BR, BW. CA, ID, NV; east to WY. Native. Carex subnigricans is a short, turf-forming, high elevation, wetland species with narrow, involute leaves. Its single, oval spikes resemble those of young C. nigricans, which has wider, flat leaves. Carex breweri has broader heads and veined perigynia and lives in drier habitats. |
Flora of Oregon, volume 1, page 232
Barbara Wilson, Richard Brainerd, Nick Otting |
Flora of Oregon, volume 1, page 229
Barbara Wilson, Richard Brainerd, Nick Otting |
C. abrupta, C. agastachys, C. amplifolia, C. angustata, C. aperta, C. aquatilis, C. arcta, C. arenaria, C. atherodes, C. athrostachya, C. atrosquama, C. aurea, C. barbarae, C. bebbii, C. bolanderi, C. brainerdii, C. brevior, C. breweri, C. buchananii, C. buxbaumii, C. californica, C. canescens, C. capillaris, C. capitata, C. chordorrhiza, C. comans, C. comosa, C. concinna, C. concinnoides, C. cordillerana, C. crawfordii, C. cusickii, C. davyi, C. deflexa, C. densa, C. diandra, C. disperma, C. distans, C. douglasii, C. duriuscula, C. echinata, C. exsiccata, C. feta, C. filifolia, C. fissuricola, C. fracta, C. geyeri, C. gynocrates, C. gynodynama, C. halliana, C. harfordii, C. hassei, C. haydeniana, C. hendersonii, C. heteroneura, C. hirsutella, C. hirta, C. hoodii, C. hystericina, C. idahoa, C. illota, C. infirminervia, C. inops, C. integra, C. interior, C. interrupta, C. jonesii, C. kelloggii, C. klamathensis, C. kobomugi, C. laeviculmis, C. lasiocarpa, C. leporina, C. leporinella, C. leptalea, C. leptopoda, C. limosa, C. livida, C. longii, C. luzulina, C. lyngbyei, C. macrocephala, C. macrochaeta, C. media, C. mendocinensis, C. mertensii, C. mesochorea, C. micropoda, C. microptera, C. multicaulis, C. nardina, C. nebrascensis, C. nervina, C. neurophora, C. nigricans, C. nudata, C. obnupta, C. pachycarpa, C. pachystachya, C. pansa, C. paysonis, C. pellita, C. pelocarpa, C. pendula, C. petasata, C. phaeocephala, C. pluriflora, C. praeceptorum, C. praegracilis, C. praticola, C. preslii, C. pumila, C. raynoldsii, C. retrorsa, C. rossii, C. saxatilis, C. scabriuscula, C. scirpoidea, C. scoparia, C. scopulorum, C. serpenticola, C. serratodens, C. sheldonii, C. simulata, C. spectabilis, C. stipata, C. straminiformis, C. subbracteata, C. subfusca, C. subnigricans, C. sychnocephala, C. tahoensis, C. tiogana, C. tribuloides, C. tumulicola, C. unilateralis, C. utriculata, C. vernacula, C. vesicaria, C. viridula, C. vulpinoidea, C. whitneyi, C. zikae |
C. abrupta, C. agastachys, C. amplifolia, C. angustata, C. aperta, C. aquatilis, C. arcta, C. arenaria, C. atherodes, C. athrostachya, C. atrosquama, C. aurea, C. barbarae, C. bebbii, C. bolanderi, C. brainerdii, C. brevior, C. breweri, C. buchananii, C. buxbaumii, C. californica, C. canescens, C. capillaris, C. capitata, C. chordorrhiza, C. comans, C. comosa, C. concinna, C. concinnoides, C. cordillerana, C. crawfordii, C. cusickii, C. davyi, C. deflexa, C. densa, C. diandra, C. disperma, C. distans, C. douglasii, C. duriuscula, C. echinata, C. exsiccata, C. feta, C. filifolia, C. fissuricola, C. fracta, C. geyeri, C. gynocrates, C. gynodynama, C. halliana, C. harfordii, C. hassei, C. haydeniana, C. hendersonii, C. heteroneura, C. hirsutella, C. hirta, C. hoodii, C. hystericina, C. idahoa, C. illota, C. infirminervia, C. inops, C. integra, C. interior, C. interrupta, C. jonesii, C. kelloggii, C. klamathensis, C. kobomugi, C. laeviculmis, C. lasiocarpa, C. leporina, C. leporinella, C. leptalea, C. leptopoda, C. limosa, C. livida, C. longii, C. luzulina, C. lyngbyei, C. macrocephala, C. macrochaeta, C. media, C. mendocinensis, C. mertensii, C. mesochorea, C. micropoda, C. microptera, C. multicaulis, C. nardina, C. nebrascensis, C. nervina, C. neurophora, C. nigricans, C. nudata, C. obnupta, C. pachycarpa, C. pachystachya, C. pansa, C. paysonis, C. pellita, C. pelocarpa, C. pendula, C. petasata, C. phaeocephala, C. pluriflora, C. praeceptorum, C. praegracilis, C. praticola, C. preslii, C. pumila, C. raynoldsii, C. retrorsa, C. rossii, C. saxatilis, C. scabriuscula, C. scirpoidea, C. scoparia, C. scopulorum, C. serpenticola, C. serratodens, C. sheldonii, C. simulata, C. spectabilis, C. stipata, C. straminiformis, C. subbracteata, C. subfusca, C. sychnocephala, C. tahoensis, C. tiogana, C. tribuloides, C. tumulicola, C. unilateralis, C. utriculata, C. vallicola, C. vernacula, C. vesicaria, C. viridula, C. vulpinoidea, C. whitneyi, C. zikae |
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BC, 
CA, 
OR, 
WA
Flora NW, 
PNW Herbaria
WildflowerSearch
iNaturalist (observations)
USDA Plants Database
