Blue-flowered corn-salad is a weak-stemmed annual with mostly smooth herbage and dichotomously branched stems. The stems range from 15-30 cm long. The basal leaves are spatulate and 3-5 cm long and 6-15 mm wide with entire margins. The upper stem leaves are broadly linear to oblong, entire or slightly toothed, and from 1.5-2 cm long.
The inflorescences are head-like cymes from 6-12 mm wide. The bracts beneath the inflorescence are linear. The corollas are pink or bluish and about 2 mm long. The 5 petals or lobes are about equal in length to the short tube.
Blue-flowered corn-salad may be found in moist, open soils along roadsides, on cultivated fields, and in other disturbed places.
A weedy species, blue-flowered corn-salad may now be found over much of the United States .