The major vegetation types in Sonora and southern Arizona are:

mangrove (coastal--not indicated)

tropical deciduous forest (red)

thornscrub (orange)

Sonoran desert & desertscrub (beige)

semidesert grassland (brown)

Chihuahuan desertscrub (yellow)

Plains & Great Basin grassland (bright green)

oak forest and woodland (dark green)

mixed conifer forest (inland blue)

© Drylands Institute, 2007-2008