This Choi Jin Hyuk photo contains
sitka spruce, picea sitchensis, mahogany, mahogany tree, beech, and beech tree.
There might also be
american white birch, paper birch, paperbark birch, canoe birch, betula cordifolia, betula papyrifera, live oak, ponderosa, ponderosa pine, western yellow pine, bull pine, and pinus ponderosa.