Stems. - Slender. Leaves. - Alternate, lance-oblong. Flowers. - Blue, small, growing in a raceme. Calyx. - Five-lobed. Corolla. - Salver-shaped, five-toothed. Stamens. - Five. Pistil. - One.
Along the banks of the stream, and in low wet places, we may look for these exquisite little flowers. This plant is smaller and less luxuriant than the European species, blossoming in early summer.