Herbs with erect stems, woody and very tough towards the base, ± purplish in upper part. Petals yellow; lateral ones c. 1.5 x 1.1 cm, ± broad elliptic, upper petal c.1.7 x 1.3 cm, broad obovate, emarginate; lower two petals c.1.5 x 0.8 cm, ± oblanceolate. Pods erect, purplish-green. A small number of plants.