[Edited by wcutler 20090515: This was labelled Prunus x pugetensis for about a year. I'm not convinced, and I have now merged it with another thread querying emarginata in which P. x pugetensis and cerasus were discussed. These are all very late cherries, and not really ornamentals.] I thought I found a bitter cherry (Prunus emarginata) in bloom May 13 in Stanley Park near the Japanese War Memorial Shirofugens, but my claim was met with a certain amount of incredulity, so I'm posting it here for confirmation or identification. It's a taller than broad tree with ball-shaped clusters of small single white flowers, green leaves, cherry-like striped bark. These are Elena Dopiro's photos.