Erect or ascending shrub to 80 cm tall, viscid, glandular-hairy, with few simple hairs. Leaves lanceolate, dentate, usually lyrate; lamina 3-6 cm long, 10-20 mm wide; petiole to 3 cm long. Flowers in racemes or thyrses to 25 cm long; bracts leaf-like; peduncle ±obsolete; bracteoles lanceolate, 2-3 mm long; pedicel 5-10 mm long, articulate. Sepals lanceolate, 4-5 mm long. Corolla to 20 mm long, with long, fine, white hairs ±in rows inside, with enations, scarcely auriculate; abaxial lobes c. 9 mm long; wings c. 2.5 mm wide, dentate. Indusium depressed-obovate. Ovules c. 40. Fruit ovoid, 10 mm long; valves sometimes bifid. Seeds elliptic-oblong, 3 mm long, dark brown, colliculate.
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