I know it's VERY difficult to ID daylilies, with the thousands and thousands out there. But I'm going to give it a try anyway.
The most notable thing about this daylily is the very yellow color of the buds. The backs of the petals also show a lot of yellow. I should have measured it when it was blooming but didn't. It is about 25 to 28 inches and I would say it blooms mid-late season. Also, I'm sure it is an old, old, variety, 20 years or more.
Thanks, Sue