Editing Nearctic realm (section)

===Northern Mexico===
The Northern Mexico bioregion includes the mild-winter to cold-winter deserts and xeric shrublands, warm temperate and subtropical pine and [[Madrean pine–oak woodlands|pine-oak forests]], and Mediterranean climate ecoregions of the [[Mexican Plateau]], [[Baja California peninsula]], and the [[southwestern United States]], bordered to the south by the [[Neotropical realm|Neotropical]] [[Trans-Mexican Volcanic Belt pine–oak forests|Trans-Mexican Volcanic Belt]].<ref>{{Cite web |title=Ecoregions 2017 © |url=https://ecoregions.appspot.com/ |access-date=2023-01-25 |website=ecoregions.appspot.com}}</ref> This region also includes the only [[Tropical and subtropical dry broadleaf forests|subtropical dry broadleaf forest]] in the Nearctic realm, the [[Sonoran–Sinaloan transition subtropical dry forest]].

In terms of [[floristic province]]s, it is represented by the [[Madrean Region]].