Color, light blue. Flowers, small, in long, thin spikes. Stem, leafy, unbranched, 1 to 4 feet high, slender. Leaves at the root, broad, obovate or tapering to short petioles; those above reduced to small bracts. June to August.
Damp, gravelly, or dry soil, in meadows. A smaller form is found in swamps. Over all the Eastern States. Found 2,500 feet high in Virginia.