Rimose and areolate are contrasted with being verrucose, or "warty". Its bark is wrinkled, grayish in color and verrucose, with corky protuberances. Erythema, pruritus, and even inflamed nodules, verrucose papules, or granulomas may present. Verrucose surfaces have warty bumps which are distinct, but not separated by cracks. The herbage is verrucose, covered densely in crystalline bumps.