Our continuing investigation of lichen collections within Everglades National Park have revealed four new species to science, Cryptothecia fuscopunctata, Diorygma basinigrum, Herpothallon hyposticticum and Platygramme coccinea. In addition, the following 16 taxa are reported for the first time to the continent north of Mexico: Coenogonium isidiatum, C. isidiiferum, C. nepalense, C. subdilutum, Enterographa subserialis, Fellhanera rhapidophylli, Malmidea flavopustulosa, Melanotrema platystomum, Phyllopsora labriformis, Pyrenula dissimulans, P. minor, P. parvinuclea, P. pleiomera, Ramalina leptosperma, Sclerophyton seriale and the lichenicolous fungi Labrocarpon canariensis encountered on Ochrolechia africana. A brief discussion comparing richness and density of the corticolous Everglades lichen flora with that of Central and South America lowland tropical forests is presented.