lmarva PeninsulaAlaska PeninsulaKenai PeninsulaNiagara Peninsula"Belt" regionsBible BeltCorn BeltCotton BeltFrost BeltRice BeltRust BeltSun BeltSnow BeltSouth(i.e. Mexico)NorthernBasin and Range ProvinceBaja California PeninsulaLerdo LandingSalton TroughIsla LlaveComarca LaguneraSierra de San FranciscoGulf of CaliforniaColorado River DeltaPimería AltaCentralTierra CalienteLa MixtecaLa HuastecaSierra GordaBajíoValley of MexicoMezquital ValleyTrans-Mexican Volcanic BeltTrans-Mexican Volcanic Belt pine–oak forestsRevillagigedo IslandsIslas MaríasSouthernSierra Madre de OaxacaYucatán PeninsulaKu-Maloob-ZaapPuucSierra Madre del SurTriangle of the SunIsthmus of TehuantepecSierra Madre de ChiapasChiapas HighlandsSoconuscoPetén BasinSierra Madre OrientalSierra Madre OccidentalGulf of MexicoCaribbeanAntillesGreater AntillesLesser AntillesLeewardLeeward AntillesWindwardLucayan ArchipelagoSouthern CaribbeanWest IndiesAridoamericaMeso