Hello Lynn-- and welcome to English Forums. I suppose I know them as Tiger Lilies, since the term Day Lily is unfamiliar to me. However, they appear to be different flowers, though I admit that they look alike. From various internet sources:
Tiger Lily is a common name for several species of
I see. They are different flowers. After I checked all the pictures, there were none of them that I looked for. This is the flower that I wanted to know how you call it in English (as the picture). The kind of flower can be eaten in my country.
I think the day lily (Fulva day lily) you showed me is pretty much exactly what I was looking for. I think I got it now. Thank you very much for all your help, Mister.