FIGURE 1 in Ceratozamia sanchezae (Zamiaceae): a new cycad species from Chiapas Highlands (Mexico)

FIGURE 1. Distribution map of the known populations of Ceratozamia robusta from Chiapas (Mexico), Tabasco (Mexico), Belize, and Guatemala. The star symbol indicates the neotype locality of C. robusta: PNCS = Parque Nacional Cañón del Sumidero, which was included in this study. Large circles show the rest of the populations analyzed in this study: ENMC= Ejido Nuevo Monte Cristo, TEN = Tenejapa, YAJ = Yajalón, LC = Las Cuevas, BC = Barton Creek. Smaller red circles indicate other populations of C. robusta that have been registered in herbaria (Appendix A). Green color scale indicates the elevation in meters above sea level (m a.s.l.) as recorded in the raster layers of 30-sec resolution of the NASA Shuttle Radar Topographic Mission (SRTM) 90m Digital Elevation Database v4.1 deposited in DIVA-GIS (https://www.diva-gis.org/).