Well, I have determined that Euphorbia antiquorum is the type species for the genus Euphorbia. Is there any way I can work with this to make it like a Parent plant for the purposes of moderation? If not, I'll just let that genus go for now and perhaps can work with some of the larger species that have more progeny when I determine which ones they are. Other people are free to do that as well. Unless someone is an expert authority of a particular species, that will be a very piecemeal approach to moderating this, but with such a large and disparate genus, I'm stumped on what other course to take for now.