Stems 30-45 cm, sparsely purple-brown spotted, glabrous, simple, with 3 or 4 nodes. Petiole 0.3-3.5 cm; leaf blade elliptic to ovate or falcate, 8-19 X 4-8.8 cm, adaxially sparsely pubescent, abaxially glabrous, base oblique, cuneate, or 1 side cuneate and other rounded, margin nearly entire to shallowly undulate or crenate, apex acuminate, vermiform sclereids surrounding vascular bundles; lateral veins 8-10 on each side of midrib. Cymes 3-6-flowered; peduncle 2-3 cm, glabrous; involucre 1.5-2.5 cm in diam., outside glabrous. Calyx 5-sect from base; segments equal, linear-lanceolate, 1.5-1.8 cm X 2.5-3.5(-4) mm, outside and margin glabrous. Corolla outside white, inside purple spotted, 3-4 cm, outside sparsely glandular puberulent, inside with a ring of hairs; tube 2.3-3.2 cm; adaxial lip 8-10 mm; abaxial lip 1-1.3 cm. Anthers 3.5-4 mm; staminodes 3, 4-7 mm. Pistil 2-2.5 cm; ovary glabrous. Style sparsely glandular puberulent. Capsule 3-3.5 cm. Fl. Aug-Oct, fr. Nov-Dec.
Home