| Ochrolechia | |
|---|---|
| |
| Ochrolechia parella | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Pertusariales |
| Family: | Ochrolechiaceae |
| Genus: | Ochrolechia A.Massal. (1852)[1] |
| Type species | |
| Ochrolechia tartarea | |
| Synonyms[2] | |
| |
Ochrolechia is a genus of crustose lichens in the family Ochrolechiaceae.[3] These lichens typically form uneven, often thick, crust-like growths on various surfaces and are characterised by their white to pale grey thalli, which may have a greenish tint. The genus has a long evolutionary history, with fossils dating back to the Paleogene period, about 34 million years ago. Ochrolechia species have disc-like apothecia (fruiting bodies), which are usually yellowish or brownish-pink and often covered with a fine white powdery coating. The genus is widely distributed and includes both common and rare species, with some found in extreme environments such as arctic and alpine regions. Ochrolechia lichens produce diverse secondary metabolites, including orcinol depsides, depsidones, and xanthones.
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Wijayawardene et al. 2020was invoked but never defined (see the help page).