Plants 30-100 cm, spreading-pilose, villous. Leaf blades 4-15 cm. Inflorescences of solitary, axillary flowers. Pedicels 5-20 cm. Flowers: calyx 2.5-6.2 cm; tube 1.2-1.7 cm, spreading-pilose; lobes linear to linear-lanceolate, 1.2-4.5 cm; petals purplish red to pink (rarely white), unspotted, 1.5-4 cm, equaling or shorter than calyx lobes. Capsules 16-24 mm. Seeds 3-4 mm wide. 2n = 48 (Europe).