Subspecies, varieties, forms and cultivars of plants belonging to the Euphorbia poissonii group

• Euphorbia poissonii Pax: has stout flowering branches, with 8-10 ranks of leaves, rudimentary spines and numerous inflorescences densely clustered at the end of shoots. Tropical West Africa from Guinea to North of Nigeria
• Euphorbia poissonii f. variegata hort.
• Euphorbia sp. Senegal
• Euphorbia unispina N.E.Br.: has 4-5 ranks of leaves and one spine. Distribution: Guinea, Mali and southern Sudan:
• Euphorbia venenifica Trémaux ex Kotschy: Has a very poisonous latex, thorns simple not flat at the base without basal prickles. Distribution: Chad, Sudan and Ethiopia.