In message , WaltA
writes

There is another tree on our patch that has a lot of it high up (way
out of reach even with a long ladder), I think I was once told it was
some sort of poplar ? Not the sort of poplar that I knew in my youth,
not the tall thin (Lombardy ?), a much more um open rounded fluttery
leaved thing, a 'tree' like tree ! (That sounds stoopid dont it !) with
a habbit of dropping the odd 2ft dia. stem onto the unwary from time to
time. What trees are commonly adopted by mistletoe ?

There's several types of poplar, but "fluttery leaved" sounds like an
aspen (Populus tremula). This has rounded, shallowly toothed leaves.
Most other poplars have leaves which are broadest towards the base.
--
Stewart Robert Hinsley