Oak and cherry tree leaves have pinnate venation. Palmate Venation: The veins radiate in a fan shape from the leaf petiole. Examples include maple and sweetgum leaves.

David Stahle, Department of Geosciences, University of Arkansas In a state famous for exceptional trees, the blue oaks of ...

A Maryland program to spot and document its biggest trees started a century ago. John Bennett is the man who keeps the ...