Perennial herb with basal rosette, to 1 m tall, glabrous or sparsely glandular-hairy; tap root thick. Basal leaves elliptic-obovate, dentate, sometimes ±glaucous; lamina 10-25 cm long, 20-45 mm wide. Cauline leaves smaller. Flowers in terminal thyrses or racemes to 40 cm long; bracts lanceolate, 8-15 mm long; peduncle 5-15 mm long; bracteoles lanceolate, 2-7 mm long; pedicel 1-4 mm long. Sepals lanceolate, 1.5-2 mm long. Corolla 12-15 mm long, villous inside, with enations, ±auriculate; abaxial lobes 7-8 mm long; wings 1.5-2 mm wide. Indusium ±square, c. 2 mm long. Ovules 40-50. Fruit ovoid, c. 7 mm long; valves entire. Seeds elliptic, 1.7 mm long, greyish to black, colliculate.
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