Noun | 1. | ![]() rosid dicot genus - a genus of dicotyledonous plants family Platanaceae, plane-tree family, Platanaceae - coextensive with the genus Platanus: plane trees plane tree, platan, sycamore - any of several trees of the genus Platanus having thin pale bark that scales off in small plates and lobed leaves and ball-shaped heads of fruits London plane, Platanus acerifolia - very large fast-growing tree much planted as a street tree American plane, American sycamore, buttonwood, Platanus occidentalis - very large spreading plane tree of eastern and central North America to Mexico oriental plane, Platanus orientalis - large tree of southeastern Europe to Asia Minor California sycamore, Platanus racemosa - tall tree of Baja California having deciduous bark and large alternate palmately lobed leaves and ball-shaped clusters of flowers Arizona sycamore, Platanus wrightii - medium-sized tree of Arizona and adjacent regions having deeply lobed leaves and collective fruits in groups of 3 to 5 |