Subshrubs. Stems 15-45 cm or more, apically puberulent. Petiole 1-6 mm; leaf blade oblong to elliptic-ovate or broadly lanceolate, 1-5.2 X 0.5-1.9 cm, papery to herbaceous, adaxially glabrous to sparsely appressed pilose, abaxially sparsely pilose, base cuneate to rounded, margin repand-denticulate to subentire, rarely serrate, apex acuminate to acute; lateral veins 3-5 on each side of midrib, flat. Cymes 1-4-flowered; peduncle 3.2-6.5 cm, glabrous or basally puberulent; bracts broadly obovate to ovate or deltoid, 2.2-4 X 2-4 mm. Pedicel 4-7 mm. Calyx 5-sect from base; segments 2.5-4.5 mm, glabrous. Corolla white to purplish, purple striate, 3.7-4.4 cm, outside pilose, inside glabrous; tube funnelform-tubular, 2.5-2.7 X 0.8-1 cm; adaxial lip 6-7 mm; abaxial lip 0.9-1.2 cm. Stamens 0.9-1.4 cm; filaments 0.8-1.2 cm; anthers oblate; connective unappendaged; staminodes 2, 5-6 mm. Disc ringlike, margin entire. Pistil 2-2.2 cm; ovary glabrous to slightly puberulent. Style glabrous. Capsule 3-6.8 cm. Seed appendages hairlike to subulate, 0.6-1 mm. Fl. Aug-Sep, fr. Oct.
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