Do I know this tree? We saw it on David Tracey's Talk and Walk in Killarney Park today, next to the Somei-yoshinos on the west side of the park. It's just coming into bloom. It seemed remarkable for the density of the branching and the bronze leaves. The flowers are not within arm's reach, but seem like 2-3cm in diameter. In the blossom photo below, the petals seem shaped like Washi-no-o, which I've only seen in photos, but they're smaller than blossoms of that cultivar described in the book and not as strong-looking and not pleated. The flowers are way too small and delicate to be Tai-haku, unless the later-opening ones will be different. These blossoms looked more like Sargentii, particularly in the last photo. I'm hoping Martin Fon, a scout on the walk, got better photos.