Cultivars
'Pyramidalis'
This tree grows 10 m to 25 m (80 ft) tall by 4 m (12 ft) wide with upright opposite branches and forms a frastigiate habit. It has dark green maple-Like leaves that turn yellow during autumn and prefers an open sunny position growing in most moderately fertile soils in hardiness zones from 3-9. 
Care should be taken when planting as the roots are strong and invasive, damaging pathways or pipes.

'Richardii'
This deciduous tree grows to 15 m tall (50 ft) and by 5 m wide (15 ft) with a pale grey trunk that can produce suckers and spreading branches that form  an open to fastigiate habit. In autumn the yellow-green leaves turn yellow before falling and the tree grows in USDA zones 4-9.