Euphorbia heptagona branching at the top

Euphorbia heptagona stems are much branched, both low down and higher up. The two young, branched stem-tips, equipped with fresh-looking spines, are still ovoid, nearly globular. There is a difference between the old and young stem sections on the vertical ridges. The ridges in the early stage are hardly ridges, although vertical folds or channels separate them. The young growth is here pale creamy green.

The spines still carry some remains of past cyathia at their tips. Spines emerge from the gaps between the tubercle-like stem sections, in the middle of the stem ridges (Euston-Brown and Kruger, 2023; Smith, et al, 2017; Vlok and Schutte-Vlok, 2015; iNaturalist).