It is a beautiful hosta. The HL sort of has conflicting information. In the description under all the photos it says “it has excellent substance and no corrugation.” Hmmmmmm......Since yours is flowering now, it seems likely to be Tut. The HL says flowers in late June.

debra

I have originator stock King Tut, Gretchen Harshberger lived a few miles from me, and frequently opened her gardens for tours. Also got there for a private tour through a friend of a friend. King Tut is more corrugated than the plant in your photo, but it is also very upright, which doesn't show well in most photos. It a rich yellow-gold color the entire season, a bit lighter when it first comes up.

Here's the photo.

It's in a lot of shade, so it's not as gold as it could be. Mine is certainly corrugated. Just guessing, but I think it's 7 or 8 years old.

Here is my King Tut. It is 13 years in my garden.

many hosta become more rugose with age ...