Greater Sonoran Desert
Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
: Initially several species were placed in Tremolecia (Hertel 1977), but now all but one have been transferred to other genera.
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Species within checklist:
Denali National Park and Preserve (Alaska)
This project made possible by National Science Foundation Awards: