Query: Trees from the North-Central US that are not in the Southern US
Domain: plants
Relevant documents:
Pinus resinosa
Quercus buckleyi
Juglans microcarpa
Cornus drummondii
Betula papyrifera
Prosopis glandulosa
Quercus bicolor
Larix laricina
Quercus palustris
Sorbus decora
Salix amygdaloides
Abies balsamea
Picea mariana
Pinus ponderosa
Pinus flexilis
Picea glauca