Sphaerellothecium stereocaulorumSphaerellothecium stereocaulorum is a species of lichenicolous fungus in the Phyllachoraceae family.DistributionSphaerellothecium stereocaulorum has been found in Alaska, Canada and Greenland.Host species and symptomsSphaerellothecium stereocaulorum is known to infect the naked stems of Stereocaulon groenlandicum and Stereocaulon rivulorum.