hi again ethel as you have requested i will quote from brooker and kleinig as a generalisation forest trees are single stemmed and have a crown forming a minor proportion of the whole tree height with the combined forest crowns occupying at least of the ground cover woodland trees are single stemmed although they may branch at a short distance above ground level and have a crown occupying a major proportion of the tree height with the combined crowns occupying less than of the ground cover having reflected on the above and the original edit i did i can see that there are interpretative errors in my edit if you would like to make cleaner sense of the above in the article as i see you have attempted in historic edits then by all means please go ahead thanks