The leaves on this Acer miyabei are very attractive, and the samaras are so fancy with their wings completely open and fluted on the edge. They really look like wings. I thought this unnamed one looked a lot like the miyabei, both the leaves and the open wings, but the wing edges aren't so fancy and their contour is different. This doesn't come up on a search, so I'm adding some text. It's recorded as Acer (SICH.1469), Accession 031718-0571-1995, in area 3AD4.