There are those who look down at Hemerocallis fulva as being a 'weed.' However, it is a gorgeous plant and there are a number of variations within the species. Shown below are ones I have here currently in bloom.
H. fulva 'Europa.' This is the one commonly seen growing wild [naturalized] in much of the USA. No Daylilies are native to the USA.
Korean Fulva. This one is pod and pollen fertile. It starts blooming after 'Europa.'
H. fulva 'Pastelrose'. It is pod and pollen fertile.
H. fulva 'Flore-Pleno.' It also has been known to grow wild [Naturalized] in some places.