Subshrubs, 1-2 m tall, branched, glabrous. Cauline leaves sessile or shortly petiolate; blade oblong to broadly lanceolate, up to 25 × 3.5 cm, papery, abaxially often puberulent, adaxially glabrous or sparsely puberulent, base cuneate, margin glandular-serrate, apex acuminate. Racemes terminal, densely flowered, 5-20 cm, often pendulous; bracts linear-lanceolate, usually entire; pedicels ca. 5 mm, with 2 bracteoles at top; bracteoles leaflike, 6-12 × ca. 1 mm, margin glandular-denticulate. Hypanthium obconic, ca. 6 × 4 mm, glabrous to puberulent; calyx lobes erect or spreading, linear, 12-16 mm, usually denticulate. Corolla blue-purple or purple-red, 20-30 cm, puberulent; upper 2 lobes ca. 17 mm; lower 3 lobes ovate-lanceolate, ca. 8 mm. Filaments 12-15 mm, puberulent below; anther tube gray-blue, ca. 5 mm, back densely setulose; lower 2 anthers sparsely barbate at top. Capsule oblong, ca. 12 × 8-10 mm. Seeds dark brown, ellipsoid. Fl. and fr. Aug.
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