Printed at http://plantfinder.nativeplanttrust.org/index.cfm/
Sisyrinchium angustifolium 'Lucerne'
Lucerne blue-eyed grass
Closely related to Iris, blue-eyed grass is often mistaken for a graminoid until it comes time to flower: small blue flowers with a bright yellow eye bloom continuously throughout the summer, opening when exposed to sunlight and closing at night or on cloudy days. 'Lucerne' has larger, darker flowers and shorter stems.