Quite a few plants throughout North America have the common name of Blue-eyed grass.  These different species of the Sisyrinchium genus have very similar identifying characteristics.  This plant portrait features Sisyrinchium angustifolium.

The leaves are thin, linear and smooth -- arising at the base of the plant.

Blue-eyed grass flowers have six bristle-tipped tepals which may look light blue through light purple in color.  The center of the flower is bright yellow.

After the flower is fertilized, the seeds develop inside a spherical seed capsule.

Watch this video about Blue-eyed grass (Sisyrinchium angustifolium) to learn how this plant is not a grass -- and to closely observe the flower's reproductive parts.

(Here's the same video as posted on YouTube.)