WAlvord Desert
WBlack Rock Desert
WBurma Rim
WChihuahuan Desert
WColorado Desert
WColorado Plateau shrublands
WDesert riparian
WGreat Salt Lake Desert
WHigh Desert (Oregon)
WJornada del Muerto
WMojave Desert
WMojave Desert
WOwyhee Desert
WPinyon–juniper woodland
WSagebrush steppe
WSonoran Desert
WTamaulipan mezquital
WWyoming Basin shrub steppe
WYuma Desert