Query: Trees of Western Canada that are not of the Northwestern United States
Domain: plants
Relevant documents:
Abies amabilis
Pinus resinosa
Cornus alternifolia
Acer circinatum
Acer glabrum
Betula neoalaskana
Acer spicatum
Tsuga mertensiana
Larix laricina
Salix amygdaloides
Jack pine
Celtis occidentalis
Tilia americana
Picea mariana
Ostrya virginiana
Fraxinus nigra
Acer macrophyllum