tree size (definition of a tree)
One of the three main elements by which a tree is defined. The others are tree species and tree form. Mitchell (1974) defined a tree as: a woody perennial plant which can attain a stature of 6m or more on a single stem. A criterion of size also defines trees legally recognized in a conservation area and in the issue of a felling licence, but in principle there is no minimum size (see bonsai).