Distribution: Occurring east of the Cascades crest in northeastern Washington; Northwest Territory to northeastern Washington, east to Saskatchewan.
Habitat: Mesic to dry meadows and stream banks.
Flowers: June-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Sensitive in Washington (WANHP)
Pollination: Bees, flies
Tufted, perennial herbs, the stems simple, glabrous, 0.8-2 mm. wide and up to 4.3 dm. tall.
Leaves mostly basal, glabrous, narrowly linear, up to 3 dm. long.
Inflorescence borne singly, subtended by a pair of green, glabrous bracts, the outer 20-63 mm. long, 17-42 mm. longer than the inner, united at the base, the tips acute to acuminate; tepals 6, pale blue to light bluish-violet, the bases yellow, 8-9.1 mm. long, oblong, rounded, with a short bristle; stamens 3, the filaments fused to near the tip; ovary inferior.
Capsule 3-celled, beige to light brown, globose, 3-5 mm. long.
The extremely long bracts are unique to this species.
PNW Herbaria: Specimen records of Sisyrinchium septentrionale in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Sisyrinchium septentrionale checklist entry
OregonFlora: Sisyrinchium septentrionale information
E-Flora BC: Sisyrinchium septentrionale atlas page
CalPhotos: Sisyrinchium septentrionale photos