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Columbia sedge
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spring sedge, woodrush sedge
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| Plants rhizomatous with deep rhizomes; culms 15–90 cm tall; plant bases reddish brown. |
Plants cespitose to short-rhizomatous, 15–90 cm tall; culms much longer than the leaves. |
sheath fronts hyaline, usually with pale brown spots, not ladder-fibrillose; blades 3–6 mm wide, green. |
sheath fronts whitish hyaline; blades 3–9 mm wide, glabrous. |
lowest bract subequal to the inflorescence; lateral 2–3 spikes female, occasionally androgynous; erect, 1.5–3.5 cm × 4–6 mm; terminal 1–2 spikes male. |
lowest bracts with more or less inflated sheaths (5)10+ mm long; lateral spikes crowded around the terminal one or separated; erect and nearly sessile or the lower ones drooping on long; slender peduncles; female or androgynous, 1.2–3.2 cm long; terminal spike male, 1.1–6.6 cm long. |
elliptic to obovate, 2.5–2.8 × 1.5–2 mm; coppery brown; orangish; olive brown, or purplish with reddish brown spots on distal half; veinless, inflated, only loosely enclosing the achene; beak 0.1–0.3 mm, not bidentate; stigmas 2. |
(3)3.5–5.5 × 0.9–1.6(1.8) mm; either mostly purple, or green with reddish or purple spots, usually glabrous, sometimes with sparse, spreading to appressed, usually long; soft; thin hairs, with several inconspicuous veins; beak with distance from achene top to beak tip less than 2.5 mm; stigmas 3. |
lenticular. |
trigonous. |
longer or shorter than the perigynia; reddish brown; acute. |
shorter than the perigynia; reddish brown to dark purplish with a light mid-stripe; margins sometimes white, glabrous. |
=54. |
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Montane bogs, floodplains, lake shores, pond margins, wet prairies, and sedge meadows. 0–1400 m. BW, Casc, Col, ECas, WV. ID, WA; north to British Columbia, northeast to MT. Native. Carex aperta is distinguished by inflated perigynia in an odd shade of olive green or orange. Once a community dominant along the lower Columbia River and harvested for hay, C. aperta now thrives mainly along lake shores in the Cascades. |
Bogs and wet meadows. 600–3000 m. BR, BW, Casc, CR, ECas, Est, Sisk. CA, ID, NV, WA; north to British Columbia, east to WY. Native. The broad, yellow-green leaves clustered at the base of the culm, together with the inflorescence bracts with more or less inflated sheaths, the pointy perigynia, and the reddish to purplish female scales, make C. luzulina unlike any other sedge in Oregon bogs. However, it is hard to point at any one consistent feature as identifying this species. Two varieties (sometimes treated as species) have been recognized in C. luzulina, but the traits supposedly distinguishing them vary independently. Variable C. luzulina is confused with Californian C. luzulifolia and C. fissuricola, which usually have perigynia with flat margins more than half as wide as the achene. In C. fissuricola, the perigynium faces, at least near the beak, have sparse, spreading-ascending, short, stiff bristles, and the pistillate scales have hairs on the distal margins. |
Flora of Oregon, volume 1, page 188
Barbara Wilson, Richard Brainerd, Nick Otting |
Flora of Oregon, volume 1, page 213
Barbara Wilson, Richard Brainerd, Nick Otting |
C. abrupta, C. agastachys, C. amplifolia, C. angustata, 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. vallicola, 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. 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. vallicola, C. vernacula, C. vesicaria, C. viridula, C. vulpinoidea, C. whitneyi, C. zikae |
| Carex accedens |
Carex ablata, Carex luzulina var. ablata, Carex luzulina var. luzulina |
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BC, 
OR, 
WA
Flora NW, 
PNW Herbaria
WildflowerSearch
iNaturalist (observations)
USDA Plants Database
CA, 
