Can you help to identify this tree?

[SouthWestGardener]

Good morning, new to the forum. Hopefully it's OK to post this here?

 

I wonder if you're able to help me identify this tree. I don't know if I planted it or if it's grown of it's own accord. A single trunk around 4-5" diameter, grown to around 15'. Only one branch coming off the plant at around 4' from the ground. No other branches, which might suggest it's not a tree at all? Perhaps an overgrown shrub??

 

The bark is fairly smooth with a vertical pattern. I've tried apps to identify it, but none seem to be correct. Your help would be very much appreciated. I have attached photos of the trunk and the leaves. 

[openspaceman]

It looks like goat willow to me

[Stubby]

Goat Willow / Grey Willow ? Goat/Grey hybrid ? 

[daltontrees]

Almost 100% it's goat willow (salix caprea)

[daltontrees]

4 hours ago, Stubby said:

Goat Willow / Grey Willow ? Goat/Grey hybrid ? 

Looks pure goat. But it's a messy genus.

[Stubby]

27 minutes ago, daltontrees said:

Looks pure goat. But it's a messy genus.

Tis too ! thats why I always have an " each way " bet . 🙂

[daltontrees]

9 minutes ago, Stubby said:

Tis too ! thats why I always have an " each way " bet . 🙂

Have a look at the attached chart of hybrids. Not even a complete list. Dirty stop-outs, the lot of them. 

willow hybrids.pdf