You have a twig with hairless buds.
Look at the buds and choose from these four:-

Twigs ridged, scaley, buds on round "knobs" Larch	Buds easy to see, with fewer than four scales Limes You need leaves to tell whether you have Common Lime or Small-leaved Lime or Large-leaved Lime Alder Italian Alder Willows This links to a key to this variable group   Walnut London Plane Sweet Chestnut	Buds tiny or scales hard to make out Blackthorn False-acacia Cherry plum	Buds with more than four scales, easily visible
Click on the name to see which gives the best fit - use "Back" to return to this page. Click on a picture to enlarge it			Click on your choice

(Click the box which matches your twig)