Adenium boehmianum is closely related related to A. swazicum, and occurs on the other side of southern Africa in Namibia and southern Angola. It is an erect arborescent shrub, usually with barely succulent stems and only modestly swollen roots. In the northern end of its range it develops thick conical trunks. The leaves are the second largest in the genus. The flowers have broad petals that usually overlap, and are borne from late summer into early winter. This species shares a diagnostic trait with A. swazicum: petals are of uniform pink with no fading toward the dark throat, and very short anther appendages. A. boehmianum is uncommon in cultivation.