Plant Form biennial erect herb to 90 cm tall, with one or more flowering stems per rosette. Leaves in rosette to 15 cm long and 1.5 cm wide, on stems shorter, wedge-shaped at base, densely hairy. Flowers zygomorphic, 12-15 mm long, blue. Fruits four pale brown nutlets. Distinguishing Features Blue flowers versus purple in Pattersons Curse.