Common name: Daylily 'Flore Pleno'
Plant Link: http://plantsdatabase.com/go/29149/
Very nice flower. Unusual looking. That's what I like about it.
I think it is too corrales, I did a little looking on the web, and I saw the name Kwanso more than once! I sure do enjoy it!
I also found this, from HemerocallisSpecies.com:
not identical to H. fulva 'Kwanzo': H. fulva 'Flore Pleno' shows normally 15-18 tepals per flower (second row of petals mostly overlap sepals)
H. fulva 'Kwanzo' shows normally 7-12 tepals per flower.
Now I dont know if I have got 15-18 or 7-12, knowing me (the odd ball that I am) probably have one with 13-14 tepals! ;o) I just know I like it!