piksihk,
If my description of my plant does not match yours please forgive me, but when I saw your picture, I said to myself, that is the same one as the NOID in my yard. I got mine from my parents house after they both passed away, so I am guessing the plant would be at least 20 to 30 yrs old.
You're in 9a and I am in 8b, and they are both blooming now so I thought that was a good sign they are the same also.The petals are a little darker than the sepals, the scape is about 24 to 26 inches the bloom is about six inches. My neighbor and her husband came over the other day, and of all the daylilies blooming now he picked this as his favorite, so I dug them one and sent it with a 'Champagne Elegance' ,her favorite. This daylily has a heavy substance to the bloom, and for me it is always later in the day before it fully opens its best and looks fantasitc. I cannot capture how pretty this daylily actually is with the camera,and to me it looks pretty darned good in the photos.