If your seeing this tree in the gardencentre's the info should be on a card thats attched to the bottom of the tree via a label in a frame in the ground at the front base of the tree,
or do as ive suggested a while ago take a good gardeninf ref book with you when you go to buy such shrubs and all the info will be in the book "and it will be correct info"
sometimes garden centre do get it wrong but ref books dont.

Styrax japonica

Probably tucked in the label drawer Owdboggy ;)
I spent an age looking for an old label earlier today - wish I hadn't bothered now - all the lovely labels for the plants I lost in the flooding last year, just upset me!

Thanks Worthy1. The label should be attached to the tree, but probably blown away by the wind. Odd thing is neither of us can remember buying it either, but obviously since it is in flower in the garden and looks very healthy, we did some time ago. This is the first time it has flowered though. Nice plant.

Scottish I stopped keeping labels from deceased plants a long time back, it was just too depressing.

A lesson I've just learned Owdboggy! Every day is a school day!