Figure 1. Distribution of the Acer sacchraum subsp. skutchii populations in Mexico and Guatemala. Some Mexican provinces are illustrated. 1 is Tamaulipas (Tamaulipas state), 2 is Talpa de Allende (Jalisco state), 3 is Sierra de Manantlán (Jalisco state), 4 is Tenejapa (Chiapas state), and 5 is Las Minas (El Progreso department, Guatemala). A is Sierra Madre Oriental, B is Sierra Madre Occidental, C is Eje Neovolcánico, D is Sierra Madre del Sur, and E is Serranías Transísmicas. C and D are considered Serranías Meridionales. More detailed location of sites studied are not provided to prevent wood extraction.