This species is native to Cape Provinces and KwaZulu-Natal in Africa.
While googling this particular euphorbia I discovered the flowers are reduced in size and aggregated into a cluster of flowers called a cyathium (plural cyathia) and this feature is present in every species of the genus Euphorbia but nowhere else in the plant kingdom.
Cyathium is a type of inflorescence in which a cup-like cluster of modified leaves encloses a female flower and several male flowers. It resembles a single flower.
I love learning something new :)