(Apologies for the crosspost)

Would some kind soul identify this flowering tree for me please? It is
about 45 centimetres high, and I've inherited it from the previous
owner of the garden. The stem is only about 15mm thick at the base, so
I'm assuming it was planted early last year or the year before. Thought
it may be dead, but it began flowering about 10 days ago.

http://www.declan.tv/images/what_kind_of_tree_is_this.jpg

(image is 186KB)

Regards Declan,
Botanically challenged,
Okazaki, Japan