The handful of European romuleas can be tricky, and I'm not sure that they are very well known. The first picture below is I think Romulea linaresii, photographed in spring at about 1,000 metres up in Greece. The second I thought was R. bulbocodium, also in Greece, but as that is described as always having a yellow throat I'm a bit baffled: any suggestions?
Several dozen species grow in the "mediterranean" part of South Africa, and they are quite easy to grow from seed. The third picture shows Romulea eximia which I had planted out in the cultivated part of our Greek garden. It grew very well there, but eventually the "cultivation" (largely a mattock assault on all visible soil just before our visits, by our wonderful tower-of-strength Greek helper) destroyed it. So now the seed-raised South African and other bulbs all get planted out in our lower managed-wilderness part.