''Cercidospora thamnoliicola'' is a species of lichenicolous fungus in the genus '' Cercidospora'' but it has not been assigned to a

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

. It is known to

parasitise Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has ...

the lichen ''

Thamnolia vermicularis ''Thamnolia'' is a genus of lichens in the family Icmadophilaceae. Members of the genus are commonly called whiteworm lichens. Two species of ''Thamnolia'' are used by ethnic peoples of Yunnan Province (China) as a component of purported hea ...

'' in Iceland but it is rare there.Helgi Hallgrímsson & Guðríður Gyða Eyjólfsdóttir (2004)
''Íslenskt sveppatal I - smásveppir'' [Checklist of Icelandic Fungi I - Microfungi
Fjölrit Náttúrufræðistofnunar. Náttúrufræðistofnun Íslands [Icelandic Institute of Natural History]. ISSN 1027-832X The species was first species description, formally described by mycologist Per G. Ihlen in 1995, from specimens growing on ''Thamnolia vermicularis'' in Norway.

References

Dothideomycetes Fungi described in 1995 Fungi of Europe Fungi of Iceland Lichenicolous fungi {{Dothideomycetes-stub