Since many daylilies look alike, it is difficult to ID just from a flower. Can you give us more info? What are the following: size is the flower, height of the scape, Tetraploid or Diploid (if you don't know that one you can usually find out during bloom season by if it sets pods using Tet or Dip pollen), bloom season and plant habit (Ev, Dor or SEv)?
Any of this info you can give us will help greatly.
For example, it looks a bit like Nacogdoches Bing Cherry which is 14",Dip,2.50",SEv,E,Frag,Re
Here is a picture of the whole plant.
Thanks.
Edited: We cross posted. Probably not NBC as that one is too small and short.