Yellow star grass

This perennial wildflower consists of a rosette of slender basal leaves and slightly shorter flowering stems. The basal leaves are up to 12" tall and ½" across; they are linear or linear-elliptic in shape and smooth (entire) along their margins. They are medium to dark green with scattered white hairs. One or more flowering stems up to 8" tall develop from the rosette of basal leaves; they are medium green with scattered white hairs. Each of these stems terminates in a rather loose umbel of two or more flowers. Each flower is about ¾" across and it consists of 6 yellow tepals that are widely spreading and lanceolate in shape. The tepals (especially the 3 outer ones) are often hairy along their undersides while the flower is in bloom. In the center, a yellow pistil is surrounded by 6 stamens with prominent golden yellow anthers. The blooming period occurs from mid-spring to early summer and lasts about 1 month. Sometimes there is a mild floral fragrance. Each seed capsule splits open irregularly, releasing several glossy black seeds that are covered with concentric rows of minute wart-like projections. The root system consists of a small corm. (information from http://www.illinoiswildflowers.info/prairie/plantx/yl_stargrassx.htm)