Physconia muscigena is a species of lichen in the family Physciaceae.

It exhibits a foliose growth form with lobes that are generally ascending and concave at the tips.

[1] The upper cortex is grey-brown to brown in color and often mostly to completely pruinose (or covered in calcium oxalate crystals known as pruina).

[1] Physconia muscigena is often found growing mosses, small plants (such as Selaginella), or detritus atop of soil or rock.

[1] Its distribution is cosmopolitan, found on all continents including Antarctica.