Hi Stefan. I just bought some Ranunculus 'Aviv', which apparently alluded to where they were imported from; Israel...
But anyway, they had little bags of Tigridia pavonia too, which I almost bought also. Maybe when I go next time to Dollar Tree. Yes, they are only one Dollar ($1!) per bag of small root corms. They originate from Mexico & the desert, southwest. But probably hybridized with a variety of species, to get a spectrum of different flower colors. Nicknames include; Peacock, Tiger & Mexican shell flower & maybe a few other odd names, people decided to call it. I just plant them in spring & water sparingly. Then it can be stored dry, considering climate of usually cool dry winters & spring & summer rainfall pattern, of original habitat of the various species.( Edit, to correct genus name)