Acer distylum

About

Acer distylum, the lime-leaved maple or linden leaved maple, is a species of flowering plant in the family Sapindaceae, native to north Honshu Island of Japan. Its closest relative is Acer nipponicum, with which it is grouped in the Acer section Parviflora. The species is noted for its 10–15 cm (4–6 in) unlobed leaves, the like of which are not found in any other maple species. The bark is grayish, and has a pink cast in young specimens. Acer distylum was first described by Philipp Franz von Siebold and Joseph Gerhard Zuccarini in 1845, and later brought to Europe by Charles Maries in 1879.

Summary from Wikipedia