I've have to check my Rob Cobb. Never noticed that it was early before.
Alas, the one daylily that has eluded me is H. flava (lilioasphodelus - its new name)
And the odd thing is, it is the daylily that made me fall in love with daylilies! I taught piano and held June recitals. One year I picked the fragrant yellow one in my uncle's yard for a bouquet. That did it! A memory for a lifetime.
I have ordered it a couple of times, but it has never been the right one. A neighbor up the street offered me some of hers, but never followed through. I really should chase it down again!