Endococcus nanellusEndococcus nanellus is a species of lichenicolous fungus in the order Dothideales. It is known from Alaska, Canada, Greenland, Hawaii, Japan, Russia, South-Korea, and Kazakhstan.Host speciesEndococcus nanellus is known to infect numerous species of the genus Stereocaulon, including the following species:Stereocaulon alpinumStereocaulon botryosumStereocaulon glareosumStereocaulon grandeStereocaulon myriocarpumStereocaulon nigrumStereocaulon paschaleStereocaulon saxatileStereocaulon tomentosum ''Stereocaulon vesuvianum''