I kinda wish it was a lot easier to tell whether or not a clover is in the museum, since I constantly have to click "museum all" to check what's in the museum before selling. What I'd suggest is a little indicator in the corner of a clover's portrait (a book or something like that, for example) so you can just see immediately if it's in the museum instead of constantly clicking to and fro the museum tab.
 "Sort the Court!"){kind=icon}
 "Ultimate Five-Leaf Clover"){kind=icon}