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Regional Overview of Mexico
Table 22. Number of plant species in six diverse ecological zones of Mexico (based on Toledo 1995c)
Biogeographic province a
Ecological zone b

Baja California


California/Baja California

Nueva Galicia 7500 c Pacific coast/ Southern serranías/ Central Plateau Temperate, and subhumid tropical
Veracruz 7400 Gulf of Mexico coast/ Sierra Madre Oriental humid and subhumid tropical
Tehuacán-Cuicatlán 2700 Tehuacán-Cuicatlán Valley Arid
Yucatán Peninsula 1936 Yucatán Peninsula subhumid to humid tropical
Chiapas 8248 Trans-isthmian serranías/ Soconusco humid and subhumid, tropical and temperate
a Source: Rzedowski 1978.
b Source: Toledo et al. 1989.
c estimate.