Sisyrinchium idahoense var. idahoense
Gerald D. Carr

Flora of Oregon

Stems 1.5–2 mm wide; margins of upper stem wings with a few small teeth.

Inflorescences inner bracts 20–30 mm long, keels toothed.

Flowers outer perianth segments 13–17(20) mm long.

2n=64, 96.

Moist meadows, stream banks, edges of springs. Flowering May–Jul. 0–1900 m. BR, BW, CR, ECas, Est, Lava, Sisk, Casc, WV. CA, ID, WA; north to British Columbia, northeast to MT, southeast to NM. Native.

Gardening with Natives

Sisyrinchium idahoense var. idahoense and potentially other subspecies or varieties of Sisyrinchium idahoense are propagated for gardening and landscaping uses. Learn more here.

Flora of North America

as described under Sisyrinchium idahoense var. idahoense

Stems 2-2.5 mm wide, margins denticulate. Spathes: keels denticulate; outer less than 2 times inner, basally connate 3.8-7 mm; inner 20-30 mm. Outer tepals 13-17(-20) mm; filaments bluish violet. 2n = 64, 96.Flowering late spring--summer. Moist meadows, stream banks; 0--2200 m; B.C.; Calif., Idaho, Mont., Oreg., Wash., Wyo.The few dodecaploid populations of var. idahoense in eastern Oregon are morphologically indistinguishable from the far more common octoploid plants.

Photo images

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Herbarium specimens

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