This BTS foto contains
sitka sparren, sitkaspar, picea sitchensis, mahonie, mahonie boom, amerikaanse witte berk, papier berken, paperbark berk, kano berk, betula cordifolia, papierberk, paper birch, kano birch, and betula papyrifera.
There might also be
douglas spar, douglas fir, beuken, beuken boom, beuk, hemlock, dollekervelboom, and hemlock boom.