Hello Fons,
The Wikipedia article you have linked to gives a good description of this specis when growing as a solitary, in widely spaced company, or near other small trees such as Ulmus alata (Winged elm).
This tree is also commonly found in growing in proximity to other members of its' specis, or occasionally mixed with other mid sized trees such as Quercus palustris (Pin oak), Carya tomentosa (White hickory), or Fraxinus americana (White ash). In this sort of grouping the trunk of a mature tree will rise 7-10 meters before branching to form the crown. Situated thus, the height is often 17-20 meters in the northern and central portions of the range.
Bob
