Color, pale blue. Calyx, tubular, with 5 narrowly linear lobes. Corolla, a long, narrow tube divided into 5 bristle-pointed, triangular broad lobes. Flowers, about 5, at the summit of the stem or branches in racemes or panicles on slender pedicels. Stem, 2 feet tall or less, slender. Leaves, with heart-shaped or clasping bases, pointed, ovate to lance-shaped. August to October.