This is one of the more common Sisyrinchium sp. in Illinois. White Blue-Eyed Grass can be rather variable in appearance: one common form is short (about 6" high) with white flowers, while another form is tall (about 12" high) with pale blue flowers. White Blue-Eyed Grass is the only Sisyrinchium sp. in Illinois with 2 sessile spathes at the apex of each flowering stalk. Only one of the spathes may be evident when a flowering stalk begins to bloom; however, both spathes (each consisting of a pair of claw-like bracts) should be observable later on when the seed capsules develop. Other Sisyrinchium spp. produce a single sessile spathe on each flowering stalk, or they produce spathes on long secondary stalks (peduncles) at least occasionally. Sometimes Sisyrinchium albidum is called Common Blue-Eyed Grass.