Euphorbia polygalifolia subsp. polygalifolia Euphorbia polygalifolia subsp. hirta Euphorbia polygalifolia subsp. vasconcensis
Tithymalus polygalifolius Euphorbia epithymoides subsp. polygalifolia Euphorbia flavicoma subsp. polygalifolia
Taxonomic data from World Flora Online, accessed June 20, 2024