Flower:

Flowers are about 1 inch across, with 5 blue petals and a cream-colored center ring. The petals have pointed tips, a vein down the center, and wavy or ruffled edges. A long curving style protrudes from the center. Flowers are clustered in a spike up to 30 inches long at the top of the plant, or in smaller clusters arising from leaf axils. Clusters may be sparsely or densely packed.

Leaves and stem:

Leaves are 3 to 6 inches long and ½ to 2 inches across, generally egg-shaped or oval, tapering to a sharp point at the tip. The leaf base tapers to narrow leaf stalks, abruptly when the base is more rounded. Leaf edges are serrated; the upper surface is rough. Leaves become gradually smaller and more narrow as they ascend the stem. Attachment is alternate. The main stem and leaf stalks are both hairy.

Notes:

This species was formerly known as Campanulastrum americanum.