Query: Trees of the Western and Northwestern United States that are also in Mexico
Domain: plants
Relevant documents:
Juniperus monosperma
Pseudotsuga menziesii var. glauca
Populus fremontii
Pinus lambertiana
Picea engelmannii
Populus deltoides
Knobcone pine
Douglas fir
Pinus jeffreyi
Abies concolor
Fraxinus anomala
Pinus contorta
Pinyon pine
Acer grandidentatum
Calocedrus decurrens
Pinus ponderosa
Pinus flexilis
Pinus monophylla