Here's an unidentified maple from UBC Botanical Garden. At about 30 years old, the tree stands about 6m tall with a similar spread. The branches are quite horizontal. Emerging leaves are unremarkable (yellowy-green?) on glaucous white shoots, darkening in summer, sometimes with a bronzy cast. The autumn colour is a good pumpkin orange. The tree appears to have come from E.H. Lohbrunner, a Victoria area nurseryman who was very active in the 1950s, '60s and '70s. I'm sure he would have been trading with others on the west coast during that time. Any guesses?
Perhaps 'Ichigyojy' Or some other in the heptalobum subspecies group. Could be just that, Acer palmatum var. heptalobum.
unidentified maple Leaf appears to be of the amoenum group of palmatum cultivars. You are correct one must know all three seasons colors but only trouble is that words just do not describe the true hues of a leaf so one could get close to identification and still not be correct. Unfortunately this could be part of the bad problem of name proliferation when one does not get to compare plants "in the flesh". This problem of identification could be readily solved if Westonbert's maple repository was up and in full running. Keep the plant alive and well till repository is ready.
Colors and pictures are indeed corresponding to Koreanum in this picture (summer) and in this one too (fall) .
