"Native" tree species and others

Henry Fox Talbot lived near Chippenham (not far from Bristol) and was one of the pioneers of photography. This is his 1840s photo of 'An Oak Tree In Winter'. Public domain image.

 The Official Guidance on Blackboard asks you to collect only "native and naturalised" species. I know you can't believe everything you read on Wikipedia, but it has a lovely clear list of British trees and their status which you may find useful.

Native species are those which have colonised this country without human help, and (generally) have been here since the retreat of the glaciers of the last Ice Age. They include sylvian favourites Hazel, Sessile Oak and Hawthorn. (Some species can only be said to be truly native in parts of the country - the Beech is naturally present only in the south where it's warm enough).

Naturalised species can be harder to agree on - they were introduced by people but have since reproduced and created self-sustaining populations. Some are so familiar that you may be surprised they aren't native, like Sycamore, Horse Chestnut and (rather bizarrely) English Elm.

If you stick to the species on that list, you should get a good mark!