This National Geographic wallpaper contains
ponderosa, ponderosa pine, western yellow pine, bull pine, pinus ponderosa, sitka spruce, picea sitchensis, and douglas fir.
There might also be
american white birch, paper birch, paperbark birch, canoe birch, betula cordifolia, betula papyrifera, beech, beech tree, mahogany, and mahogany tree.