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valley sedge
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lateral sedge, one-sided sedge
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| Plants cespitose or very short-rhizomatous, 12–60 cm tall; plant bases light brown or warm tan. |
Plants cespitose, 35–75 cm tall. |
blades 1–3 mm wide, inconspicuously papillose ventrally. |
2–3(4) mm wide. |
0.5–3 cm × 4–8 mm; spikes 5–10; short, crowded, androgynous. |
(1)1.4–2.5 cm × 9–17 mm; dense and head-like, usually tilted to one side; bracts leaf-like; longer than the inflorescence; spikes gynaecandrous. |
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. |
ovate to lanceolate, 3.5–5 × 1.3–1.75 mm, cream-colored to light brown, with 0–11 dorsal veins; wings 0.2–0.3 mm wide; beak tip usually winged and ciliate-serrulate to the tip; but occasionally unwinged, brown; parallel-sided; and entire for the distal 0.5–0.6 mm; (1.4)1.7–2.5 mm from achene top to beak tip; stigmas 2. |
lenticular. |
lenticular; (1.2)1.5–1.9 × 0.75–1(1.2) mm. |
slightly shorter than or as long as the perigynia; whitish or pale brown hyaline with green center; apex acute or short-awned. |
3.3–4.8 mm long; shorter and narrower than the perigynia; gold to brown with midrib green or gold. |
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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). |
Wet prairies, vernal pools, pond margins, marshes, road ditches and other seasonally wet places. 0–1300 m. Casc, CR, Est, WV. CA, WA; north to British Columbia; Japan. Native. With its long, leaf-like bracts and inflorescence angled to one side of the culm, C. unilateralis is usually easy to identify. Some plants are intermediate between this and C. athrostachya, which lives mainly east of the Cascades but occasionally on the west side. Carex athrostachya inflorescences are erect, perched directly atop the culm, and its lower inflorescence bracts are more bristle-like. Its beaks are unwinged, brown, and entire, but in C. unilateralis the majority of beaks are flattened and ciliate-serrulate almost to the tip. |
Flora of Oregon, volume 1, page 232
Barbara Wilson, Richard Brainerd, Nick Otting |
Flora of Oregon, volume 1, page 231
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. subnigricans, C. sychnocephala, C. tahoensis, C. tiogana, C. tribuloides, C. tumulicola, 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
