Divergence time estimates (in Mya) for 15 cloud forest taxa that span the geographic barriers identified in this study for each of the taxa derived from the BEAST analyses.

Ranges correspond to 95% highest posterior density (HPD).Biogeographic affinity: NA = North America, SA = South America, CA = Central America.Geographic barrier: Isthmus of Tehuantepec (east and west of the isthmus), Los Tuxtlas (isolated from the Sierra Madre Oriental), Chiapas Central Depression (populations in Chiapas separated by the Central Depression), Isthmus 2 (the Chiapas and Los Tuxtlas populations separated from populations west of the Isthmus of Tehuantepec).