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 ...

Loren O'Rourke, Sacramento Tree Foundation Planting native oak species on underutilized urban public lands in Sacramento has a unique set of difficulties.

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

In an age of Y2K-inspired loud graphics (think neon chrome, pixel motifs and holograms), a contrasting movement has quietly ...