Plant Identification - does anyone recognise these leaves?

Ergates

I have several of these which I popped in water, and some of them are now starting to grow roots. 
However, I’ve completely forgotten what they are and I didn’t make a note. I’m sure they must be something I am keen to have, but absolutely no idea what. Any suggestions?

Borderline

They look like Viburnum Opulus leaves.

Ergates

Of course! Thank you, Borderline! That certainly explains it. I now remember pruning a long twig off my snowball bush after it had finished flowering. Hopefully I’ll end up with a few more, as several are sprouting roots. I’ll stick a note on the jamjar in case I forget again.
Hopefully, lesson learnt!

Fairygirl

Get those labels written @Ergates