Stiff blue-eyed grass
The Four Corners states, southeast Nevada and far west Texas
Streambanks, moist meadows, damp places in woodland, from 1,700 to 9,500 feet
Linear, hairless, parallel-veined; 2 to 6 per plant
Stems of sisyrinchium demissum, a grass-like herb, are narrow (less than 0.1 inches), hairless, and branched once or twice, the lowest division relatively high up the stem, generally beyond the tips of the basal leaves.
Flowers are solitary, at the end of the stem branches, on stalks partially enclosed by the spathes, a pair of sheathing bracts, which are noticeably wider than the stem. The six tepals are dark purple, bright yellow right at the base, and crossed by three or five darker veins. Tepals are around half an inch long, and they have a tiny, spine-like projection at the apex. The capsule at the base of the flower is green to pale brown in color, and globular in shape; this develops in to the fruit, around half an inch in length.