Many species of lilies are commonly called “tiger lilies”, but this species is perhaps the best one to bear that moniker. After all, before the plant taxonomists determined it should properly be named Lilium lancifolium, the scientific name most in use for this species was Lilium tigrinum.
The Flora of North America entry for Lilium lancifolium adds:
Throughout most of modern botanical history this Chinese lily has been known as Lilium tigrinum, but recent nomenclatural reassessment affirms that Thunberg’s description, published sixteen years earlier than Ker Gawler’s, applies to this species. Though many North America species are known vernacularly as tiger lilies, the name is properly applied only to this one. Along with L. candidum, it is considered to be among the earliest domesticated lilies (H. D. Woodcock and W. T. Stearn 1950), no doubt because it is handsome, easy to grow, and the bulbs are edible and substantial. It is widely planted in North America, usually as a sterile triploid that is best propagated from the bulbils.
A frequent garden escape in eastern North America (range map in blue+teal), Lilium lancifolium is native to China, Japan, Korea, and possibly the Russian Far East. Due to longstanding uses for medicine and food (edible bulbs), its precise native range is likely impossible to determine.