This member of the Euphorbiaceae family was given this name by Alain Campbell White, Robert Allen Dyer and Boyd Lincoln Sloane in 1941. It is found in the hills of Little Karoo in southern South Africa, growing in a well drained soil with some water and lots of sun. The caudex can grow to fifteen centimetres in diameter, the entire plant from three to twelve centimetres in height. The flowers are yellow. The genera is named after Euphorbos, the Greek physician of King Juba II of Numidia. The species is named from Latin; collin; 'hill-grower'. The fruits by Joey Santore, Inaturalist.org. The flowers by Laaiqah Jabar, Inaturalist.org.

