A Burnham beech:

I am finishing The Man Who Loved Trees, my book about Frank A. Waugh. Drawings and etchings never before shared with the public will be the focus. My post here features Waugh’s pen drawing of a Burnham beech. Burhnam Beeches is part of a National Nature Reserve and Site of Special Scientific Interest in London. It is one of the best examples of an ancient woodland in Great Britain. Pollarded trees date to over 400 years. This reserve drew Waugh when he was able to visit London. He created photographs, drawings and etchings of the beeches, oaks and birches from there. In addition to the pen drawing, two links about Burnham Beeches follow.

beech pen drawing
Burnham beech by Frank A. Waugh, undated

https://www.cityoflondon.gov.uk/things-to-do/green-spaces/burnham-beeches-and-stoke-common