Sorry but it's nothing special in the UK as has been said on
uk.rec.gardening,
its a very wide spread poplar, the leaf colour is best on young growth, so
it is often cut back quite hard each year, this helps to keep the "Canker"
at bay. I have about 12 of them....I say about because they can sucker quite
easily.
Also to propagate all you have to do is to cut 12 to 15 inch long shoots in
the Autumn, put them about 5 to 6 inches into the ground, and by the Spring
they will be rooting.
Sorry but no fortune from it.

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk