On 11/09/2011 06:50 PM, Dave Hill wrote:
Looking at the buds on the bit of twig with the leaf I'll stick to
sycamore,

Lots of Acers have bud scales, the buds there could be from opalus,
heldreichii or any of several species.

In fairness the remaining flower stalk is sycamore-like, rather than
opalus-like, so that would rule out either opalus or rubrum as I had
suggested. Still doesn't look like pseudoplatanus to me but I'd have to
consult the references to come up with more ideas. There are a boatload
of chinese maples (sterculiaceum etc) that could have a leaf like that,
but I don't remember the samaras or flower form off hand.

-E