Japanese maples with the designation of var .ÿdissectumÿare are typically smaller, rounded, slow- growing trees, usually with cascading branching. They rarely grow to more than 12 feet in height with a larger spread. Palmate leaves, each having 7-11 deeply incised lobes, cut to the base of the leaf. They can also be called laceleaf Japanese maple, cutleaf Japanese maple or threadleaf Japanese maple.