Page authors: Don Knoke, David Giblin
Sisyrinchium sarmentosum
Suksdorf's blue-eyed grass

Distribution: Occurring east of the Cascades crest in south-central Washington; south-central Washington to north-central Oregon.

Habitat: Moist, grassy areas.

Flowers: June-August

Origin: Native

Conservation Status: Threatened in Washington (WANHP)


Tufted, perennial herbs, the stems simple, glabrous, 1.7-2.8 mm. wide and up to 3.2 dm. tall.


Leaves mostly basal, glabrous, narrowly linear, up to 2 dm. long.


Inflorescence borne singly, subtended by a pair of green, glabrous bracts, the outer 27-48 mm. long, 14-17 mm. longer than the inner, united at the base, the inner with the keel evenly curved, the tips obtuse to acute; tepals 6, pale blue, the bases yellow, 10-14 mm. long, oblong, rounded, with a short bristle; stamens 3, the filaments fused to near the tip; ovary inferior.


Capsule 3-celled, tan to medium brown, globose, 4-5 mm. long.

Identification Notes:

Sisyrinchium sarmentosum is known from only three or four populations in the Columbia River Gorge area of the Cascade Mountains. The pale blue flowers with rounded apices on the outer tepals set this species apart from others in the region.

Accepted Name:
Sisyrinchium sarmentosum Suksd. ex Greene
Publication: Erythea. 3: 121. 1895.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Sisyrinchium sarmentosum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Sisyrinchium sarmentosum checklist entry.

E-Flora BC: Sisyrinchium sarmentosum atlas page.

CalPhotos: Sisyrinchium sarmentosum photos.

USDA Plants: Sisyrinchium sarmentosum information.

12 photographs:
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