Stems 16-40 cm, purple-brown spotted, densely spreading villous, simple, with 3-5 nodes. Petiole 0.6-6 cm; leaf blade elliptic-ovate to oblong, 3-15 X 1.1-6.4 cm, villous to pubescent, base unequal, cuneate, margin shallowly repand to repand-crenate toward apex, apex acuminate, vermiform sclereids surrounding vascular bundles; lateral veins 6-11 on each side of midrib. Cymes ca. 3-flowered; peduncle 5-14 cm, sparsely villous; involucre 1-2 cm in diam., outside villous. Calyx 5-sect from base; segments equal, narrowly oblanceolate, 1.4-1.5 cm X 3-4 mm, outside sparsely puberulent, margin glandular puberulent. Corolla outside pink, 3.7-4.2 cm, outside sparsely glandular puberulent, inside with a ring of hairs; tube 3-3.4 cm; adaxial lip 5-6 mm; abaxial lip 6-7 mm. Anthers 2-3 mm; staminodes 2, 4-5.5 mm. Pistil ca. 2.5 cm, glabrous. Capsule 2.2-2.4 cm. Fl. Aug-Oct, fr. Sep-Nov.
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