Self-seeded Limes (Tilia sp.) in answer to the previous post from Philip

Lime (Tilia sp.) self seeded at Lightcliffe in the 1990s.

Still healthy, though rarely repotted, just watered.

Close up showing the galls they get every year.

I think it is known as Military Gall, and caused by an insect.

Another remarkable thing about those Lime trees at Lightcliffe is that when the seeds were ripe in summer, a few Black-headed Gulls would sometimes tear them off (without perching on the trees) and fly off with them.

I never saw them eat the seeds, but presumabely this is why they wanted them.