Acer tonkinense 粗柄槭
Acer tonkinense is an Asian species of maple. It has been found southwestern China (Guangxi, Guizhou, Tibet, Yunnan) and northern Indochina (Vietnam, Thailand, Myanmar).
Acer tonkinense is a deciduous tree up to 12 meters tall with smooth brown bark. Leaves are non-compound, up to 17 cm wide and 15 cm across, thick, usually with 3 lobes.