Physcia rhizinata is a species of corticolous (bark-dwelling), lichenized fungus in the family Physciaceae. It is a "typically fertile species lacking...

Island Physcia pseudospeciosa J.W.Thomson (1963) Physcia pumilior R.C.Harris (1990) – spotted rosette lichen; United States Physcia rhizinata Essl. &...

Colorado, primarily in forest environments. It is very similar to Physcia rhizinata and they have been confused for each other before. Esslinger, Theodore...