Euphorbia heptagona, the klipnoors (stone euphorbia) or donkienoors (donkey euphorbia), grows many stems branched at the base or higher up. The plant may reach 1 m in height when conditions permit, often only 30 cm in its harsh habitat. Tiny leaves are seen for a short while on new growth at stem tips only.
The species now apparently also includes the earlier E. enopla or boknoors (goat or antelope euphorbia) with its similar red young spines.
The distribution of the species ranges from the Ceres Karoo to the Eastern Province. The plant is found on rocky slopes and outcrops occupied by dry karroid scrub in various soils types. This specimen was seen end May in the Rooiberg (Vlok and Schutte-Vlok, 2010; iSpot).