So*no"ran (?), a. (Biogeography)
Pertaining to or designating the arid division of the Austral
zone, including the warmer parts of the western United States and
central Mexico. It is divided into the Upper
Sonoran, which lies next to the Transition zone, and the
Lower Sonoran, next to the Tropical.
So*no"ran (?), a. (Biogeography)
Pertaining to or designating the arid division of the Austral
zone, including the warmer parts of the western United States and
central Mexico. It is divided into the Upper
Sonoran, which lies next to the Transition zone, and the
Lower Sonoran, next to the Tropical.
