This member of the Euphorbiaceae family was described by Ferdinand Albin Pax in 1904. It is found from Eswatini, southern Mozambique and eastern South Africa. It is growing in grit or other well drained soil with little water and lots of sun. The caudex can grow to twelve centimetres in diameter, the branches will reach for 70 centimetres. The flowers are green.
The genera name; Euphorbia dates back to the first century BC, where King Juba II of Mauritania used it in a reference to his doctor, Euphorbos, and that name was kept as a generic name by Carl von Linnaeus. The species name after Prof. Paul e. O. W. Knuth, 1854-1899, a German botanist. The branches by Frank Vincentz, Wikimedia.com.

