Lichen identification resources
There are numerous great resources for identifying lichens, and users will need to consult these instead of relying on the iNaturalist suggested identifications. The iNaturalist "computer vision" is trained incorrectly for many taxa, so don't trust it.
Field Oriented Keys to the Florida Lichens revised April 2022, by Roger Rosentreter, Ann DeBolt & Laurel Kaminsky
Start here. This only includes Florida macrolichens and a few easily distinguished crustose genera.
Brodo, I. M., Sharnoff, S. D., & Sharnoff, S. (2001). Lichens of north America. Yale University Press.
An expensive but beautiful and well-illustrated book. Very helpful. It's one of my favorite books on any taxa.
Brodo, I. M. (2016). Keys to lichens of North America: revised and expanded. Yale University Press.
The keys in Brodo et al. (2001) are not comprehensive; many more species are included in the Brodo (2016) keys. It's not illustrated, so it helps to use it in conjunction with Brodo et al (2001) and the websites below.
Georgia Lichen Atlas by Malcolm Hodges & Sean Beeching
This includes many Florida species, is well-illustrated, and includes sections on similar species, natural history information, range maps, etc.
Lichens of Subtropical Florida, Seavy Guide
Includes photos of South Florida species, many of which are not illustrated anywhere else. 459 of the 550+ species on the Everglades National Park Lichen Project checklist are included.
Seavy also includes pages that describe how to identify common South Florida species.
Lichen Portal
Includes interactive mapping of herbarium specimens plus descriptions. Very detailed and includes all species. Some herbarium specimens may be incorrectly identified.
Ways of Enlichenment
Includes photos of many species
Lichens of North Carolina
Another good resource.
Detailed article on Trypetheliaceae
Aptroot, A., & Luecking, R. (2016). A revisionary synopsis of the Trypetheliaceae (Ascomycota: Trypetheliales). The Lichenologist, 48(6), 763-982.
Thanks to @knotwood for pointing out these additional resources:
The lichens of Fakahatchee Strand Preserve State Park, Florida
Lucking, R., Seavey, F., Common, R.S., Beeching, S.Q., Breuss, O., Buck, W.R., Crane, L., Hodges, M., Hodkinson, B.P., Lay, E. and Lendemer, J.C., 2011. The lichens of Fakahatchee Strand Preserve State Park, Florida: proceedings from the 18th tuckerman workshop. Bulletin of the Florida Museum of Natural History. 49 (4): 127-186., 49(4), pp.127-186.
Contains descriptions of cryptic species
A world key to the species of Anthracothecium and Pyrenula
Aptroot, A. (2012). A world key to the species of Anthracothecium and Pyrenula. The Lichenologist, 44(1), 5-53.