Erect, ±woody herb to 80 cm tall, glandular-hairy, ±viscid. Leaves cauline, linear to oblong, narrowing basally, flat or slightly recurved, ±dentate or entire; lamina 3-6 cm long, 3.5 mm wide. Flowers in racemes to 20 cm long; bracts leaf-like; peduncle 8-12 mm long; bracteoles linear, 2-3 mm long; pedicel 12-15 mm long, articulate. Sepals linear-lanceolate, c. 2 mm long. Corolla 10-15 mm long, hairy inside, with enations, auriculate; abaxial lobes 3-4 mm long; wings c. 0.5 mm wide. Indusium depressed-obovate. Ovules 10-14. Fruit cylindrical, 6 mm long; valves separated to midmark, usually entire. Seeds broadly elliptic, 2 mm long, pale yellow, aculeate.
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