This Regina and Emma photo contains
sitka spruce, picea sitchensis, ponderosa, ponderosa pine, western yellow pine, bull pine, pinus ponderosa, and douglas fir.
There might also be
mountain hemlock, black hemlock, tsuga mertensiana, american white birch, paper birch, paperbark birch, canoe birch, betula cordifolia, betula papyrifera, hemlock, and hemlock tree.