Annual to 40 cm, branching mainly from base. Leaves 2-or 3-pinnatifid, to 7 x 6 cm. Flowers 2-4 on short, axillary peduncles, 8-18 mm diam., white with purple marks on upper petals and purple-veined beneath; hypanthium 6-9 mm long, longer than the very short pedicel.
Annual, up to 400 mm tall, branching mainly from base. Leaves 2-or 3-pinnatifid, up to 70 x 60 mm. Flowers 2-4, on short axillary peduncles, shortly pedicellate, 8-18 mm diam., petals 5, white, upper 2 with purple marks near base, hypanthium 6-9 mm long.