Query: what is flora of Arizona and the western United States, but not Flora of Oregon?
Domain: plants
Relevant documents:
Juniperus coahuilensis
Platanus wrightii
Mentzelia albicaulis
Pinus edulis
Juniperus monosperma
Penstemon palmeri
Bristlecone pine
Quercus gambelii
Prosopis velutina
Pinus monophylla
Quercus emoryi
Cercocarpus ledifolius var. intricatus
Arbutus arizonica
Cupressus arizonica var. glabra
Suaeda nigra
Alnus oblongifolia
Quercus hypoleucoides
Salix taxifolia
Cupressus arizonica
Pinus johannis