Life form: Annual
Stems: 20–60 cm high; branched, generally glabrous, spreading or erect; sap colorless.
Leaves: Alternate, rosette, dissected twice or more, dentate or serrate.
Inflorescence: Terminal raceme.
Flowers: Purple with white; sepals 2.5–3.5 mm long, broader than corolla; corolla 6–7 mm long.
Fruits / pods: Capsule, 1-seeded, with neck equalling pedicel tip, wrinkled.