Branches 18 in. long, hairy. Lower and middle leaves 2 by 1/3 in.; elliptic, hairy on both surfaces, cystoliths obscure; petiole 1/3 in. long. Flowers often 8–15 in densely congested axillary cymes; bracteoles linear, scarcely 1/3 the length of the calyx. Calyx 1/2 in. long, divided 3/4 way down; tube sparsely hairy without, with long white hairs within; teeth long, subulate, with many simple hairs, few glands. Corolla 2/3– 3/4 in. long, purple-red; narrow-cylindric base of tube short; limb somewhat 2-lipped. Stamens 4, subsimilar; anthers oblong, distinctly tailed; pollen longitudinally many ribbed. Style hairy, one stigmatic branch linear, the other suppressed; ovary 4-ovulate. Capsule 1/3 in. long, narrow-cylindric, 4-seeded; seeds covered with hygroscopic hairs.