You'll have to give us a bit more info, please:
- location (country at least)
- setting (wild/garden/park)
- description of the shrub/tree (especially flowers and/or seeds if possible)
- and is your leaf typical in the unevenness of its edge
Meanwhile, one small tree comes to mind - Acer shirasawanum.
The degree of dissection varies from cultivar to cultivar.
But I suspect this is not the one.
Hi Mike -- Thanks for the promising reply. The tree is on a local Council estate in London, NW2. All the other leaves are equally uneven. I agree that it is not the one you suggest. It's just a regular tree size, I suppose about 10-15m. There are no flowers and I don't think there are any seeds. But I'll check. Will get some more pics, bark, etc. Meanwhile, attaching a shot of the whole leaf including stalk and the top-side.
The leaves are very 'moulded' and difficult to flatten out.
Thanks for the further info and photo.
I'm still stumped at the moment (I thought Acer circinatum for a minute, but it is still not right).
If you can have a scrabble about in the grass/stuff for last year's seeds, that could be very useful; I know they'll be dark brown and chewed/decayed.
You're right; well done.
It is Acer platanoides 'Cucullatum'.
There are a few photos on the internet, but most seem to be a bit poor as regards the leaves, eg.
Yours is much better!
I don't know its origin. It could be a known hybrid, selected seedling (which might be of unknown hybrid origin), or branch sport.