Ascending herb to 60 cm tall, hispid or almost glabrous. Cauline leaves ovate to lanceolate, usually auriculate, dentate or entire; lamina 5-8 cm long, 1-2 cm wide. Flowers in racemes to 40 cm long; bracts leaf-like; pedicel 5-10 cm long, not articulate; bracteoles usually absent. Sepals lanceolate 4-7 mm long. Corolla 15-20 mm long, ±pubescent inside between ridges, without enations; abaxial lobes 7-8 mm long; wings c. 2 mm wide, often dentate. Indusium depressed-obovate, c. 2 mm long. Ovules 25-30. Fruit ovoid, 10-12 mm long. Seeds elliptic, 3.5-4 mm long, verrucose, granulose, pale brown.
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