Sisyrinchium montanum

Sisyrinchium montanum, the blue-eyed-grass, American blue-eyed-grass, or strict blue-eyed grass, is a grass-like species of plant from the genus "Sisyrinchium", native to northern North America from Newfoundland west to easternmost Alaska, and south to Pennsylvania in the east, and to New Mexico in the Rocky Mountains. It has also been introduced to parts of France, likely during the First World War.
It is very similar to "S. angustifolium", with which it is sometimes combined.
Description.
"Sisyrinchium montanum" is a herbaceous perennial plant that grows in clumps between tall. Its stems have wings with entire to finely toothed margins. The leaves and stem are slender, broad, green or brownish, with sharp edges and a fine point.
The flowers are produced in a small cyme of two to five together emerging from a spathe, each flower about diameter, with six purplish tepals with a yellowish base and yellow stamens. The fruit is a capsule long, containing numerous small black seeds.