This has been identified below as Mikuruma-Gaeshi. I've attached photos of a cherry that has just come into bloom this week (first week of April) in the west end in Vancouver (BC). To me it looks a lot like the Takasago, but the blossoms are large singles. They're definitely pink, not white, which rules out everything on my list. The leaves are a sort of bronzy green. The branches are much sparser than the Ranchos and the blossoms are larger, but most of the trees do have a vase shape. I'd like to know what this is. Thanks.