Petractis
Sign in to savePetractis is a small genus of lichen-forming fungi of uncertain familial and ordinal placement in the Lecanoromycetes. These inconspicuous lichens grow as thin crusts embedded within rock surfaces, partnering with cyanobacteria to form barely visible films that are primarily detected by their small, star-shaped fruiting bodies. The genus contains two species that typically inhabit calcareous rocks, where their fruiting structures create distinctive pits in the stone surface after they decay.
Taxonomy · GBIF
GENUS
- KingdomFungi
- PhylumAscomycota
- ClassLecanoromycetes
- OrderOstropales
- FamilyStictidaceae
Observations80
Groupfungi
via GBIF · iNaturalist · CC0
Article
4 sectionsContents
- Taxonomy
- Description
- Species
- References
Petractis is a small genus of lichen-forming fungi of uncertain familial and ordinal placement in the Lecanoromycetes. These inconspicuous lichens grow as thin crusts embedded within rock surfaces, partnering with cyanobacteria to form barely visible films that are primarily detected by their small, star-shaped fruiting bodies. The genus contains two species that typically inhabit calcareous rocks, where their fruiting structures create distinctive pits in the stone surface after they decay.
==Taxonomy==