This is "Blue eyed Grass" (Sisyrinchium), another tiny and insignificant ditch weed that blooms in spring. Like many others, nothing significant to write about it. Very small flower.
FWIW, the name Sisyrinchium is derived from the Greek words sys (pig) and "rhynchos" (nose), referring to the habit of pigs grubbing the roots. Dunno what the heck that has to do with this plant though.