Taxa in section Helioscopia on iNaturalist. Maintained in case taxa are removed from section. To check these, I recommend taxonomic view so you can see if anyone has removed them from the section. The best way I've found to actually change them is to open each species in a new tab and manually change them (let me know if there is a better way).

Potential synonymy issues
Euphorbia hyberna canuti
Euphorbia hyberna gibelliana
Euphorbia helioscopia helioscopioides
Euphorbia edgeworthii
Euphorbia jacquinii
Euphorbia polychroma
Euphorbia villosa
Euphorbia hyberna insularis
Euphorbia cybirensis
Euphorbia cornigera cognata