What is it about this flower that makes you think it could be a crispate? Maybe you see something about it that I do not see in the photo.
As far as form, My opinion is the "form" is a "single"
Here is a link that may be helpful. The Daylily Dictionary defines crispate as well as the other unusual forms, doubles, singles etc.
https://daylilies.org/daylily-...
(By the way, when you come to the Daylily Forum here, on the right hand side in the box Welcome to the Daylilies Forum, there is a link to the Daylily Dictionary as well as some other very helpful links. )