''Carestiella'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

lichen A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), m ...

-forming

fungi A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

in the family

Stictidaceae The Stictidaceae are a family (biology), family of fungi in the order Ostropales. It has 30 genera and about 240 species. Taxonomy The family was circumscription (taxonomy), circumscribed by the Swedish mycologist Elias Magnus Fries in 1849. D ...

. It contains two species: '' Carestiella socia'' and '' Carestiella schizoxyloides''.

References

Ostropales Lichen genera Ostropales genera Taxa described in 1897 Taxa named by Giacomo Bresadola {{Ostropales-stub