Subspecies, varieties, forms and cultivars of plants belonging to the Euphorbia monteiroi group

• Euphorbia monteiroi Hook.: has a thickened stem up to 300 mm tall and 100 mm in diameter that produces a crown of thin, leafy, deciduous inflorescences with a small dark-red flower on the tips. These wither and persist as spines for several seasons. Dustribution: Angola, Namibia, Botswana, Southern Africa (Transvaal) and western Zimbabwe.
• Euphorbia monteiroi subs. brandbergensis B.Nord.: Its stem is taller from 1-2 m tall with rounded apex and an open tuberculate pattern. The peduncles are shorter with narrower bracts. Nectar glands usually 5, yellow-green, marginal processes longer. Distribution: N Namibia.
• Euphorbia monteiroi subs. ramosa L.C.Leach: up to 30 cm hight with branched stems. Stem and branches more slender, Tubercles in looser spirals. Leaves shorter. Bracts wider than long. Distribution: SE Botswana and South Africa (Mpumalanga).