I have some questions since, obviously, there are many species that appear similar. From your previous posts, you appear knowledgeable in these matters, so I am assuming you have already done some research. Any further information would be helpful. 1. You said this is a small plant. Does it appear to be a mature or immature plant? If it is mature, what are the approximate measurements? 2. Is there an above or below ground caudex? On a personal note, I love the blue color. Mark
Don't you mean which species of Euphorbia? Its Euphorbia greenwayi, a very distinctive species not mistakable for any other.