|A. buergerinum is a rare maple in North America and Europe. One of the most difficult to propagate, its a spreading, deciduous tree with 3 1/2-inch dark green leaves above and blue green on the undersides. Blooms in yellow flowers. The cultivar, 'Kyuden' is a dwarf shrub with thin twigs that set close together. The oval leaves are leathery and dark shiny green. Difficult to propagate and very rare.