Rhizocarpon pusillum

Rhizocarpon pusillum is a species of saxicolous (rock-dwelling), crustose lichen in the family Rhizocarpaceae. It is a lichenicolous lichen, meaning it is parasitic on other lichens.^[1] It was formally described as a new species in 1956 by the Swedish lichenologist Hans Runemark.^[2]

Rhizocarpon pusillum
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Rhizocarpales
Family:	Rhizocarpaceae
Genus:	Rhizocarpon
Species:	R. pusillum
Binomial name
Rhizocarpon pusillum Runemark (1956)
Synonyms
Catocarpus pusillum (Runemark) Oxner (1968)