This maple belongs to section palmata. It is native to China. According to "An illustrated guide to maples" there is one specimen in Westonbirt Arboretum, England. Planted in 1986 it had grown more than 3m in 1998. It is located in semishade forest. No further information about this plant is available. Also there aren't much information in "Maples of the world" about Acer elegantulum. There aren't any cultivars and the elegantulum itself may not be hardy. J heard that Acer elegantulum is a rootstock for other maples from palmata section. Plants grafted on A. elegantulum should be more resistant to verticillium. These pictures show Acer palmatum 'Dissectum' grafted on A. elegantulum. it matches the leaf description so I think it may be elegantulum. Does anyone has an experience with this maple as a rootstock? Is it really verticillium resist? How about hardiness?