Ostropales

The Ostropales are an order of fungi in the class Lecanoromycetes. The order was circumscribed by Swedish botanist John Axel Nannfeldt in 1932. The order contains 4 families and 46 genera, including 6 genera of uncertain familial placement.

The Stictidaceae are a family of fungi in the order Ostropales. It has 30 genera and about 240 species.

Thelopsis is a genus of lichen-forming fungi in the family Gyalectaceae. The genus was established by the Finnish lichenologist William Nylander in 1855 and contains small bark-dwelling crustose lichens that form thin crusts on surfaces. These lichens make flask-shaped fruiting bodies called perithecia, which contain numerous small ascospores divided by cross-walls. Recent molecular studies have revealed that the genus forms a closely related group within the broader Gyalecta complex, leading to taxonomic revisions that now recognise about a dozen species worldwide.

Absconditella is a genus of lichen-forming fungi in the family Stictidaceae. These lichens are characterised by their inconspicuous growth and small, cup-shaped fruiting bodies (apothecia) that are often hidden within a jelly-like mass containing green algae. The genus name, meaning "hidden", reflects their elusive nature. Absconditella species are typically found on short-lived surfaces such as decaying wood, mosses, and unstable soil. Genetic studies have revealed that the genus is more complex than previously thought, with some species being moved to a new genus, Absconditonia, and others p

Sagiolechia is a genus of lichen-forming fungi in the family Sagiolechiaceae. These lichens form either extremely thin crusts within their substrate or live parasitically on other lichens without forming their own thallus. The genus is characterised by distinctive black, glossy fruiting bodies that begin embedded within the host material and later erupt to the surface, often developing elaborate folded or star-like forms. Sagiolechia contains six species found in diverse locations including Alaska, Greenland, Norway, and Madeira, with most species being quite rare and relatively recently disco

Topelia is a genus of fungi within the family Stictidaceae.

Stictis is a genus of fungi in the family Stictidaceae. Most species are saprotrophic decomposers that inhabit dead wood, where they form small, flask-shaped fruiting bodies that remain largely embedded within their substrate and open through tiny pores. The genus is characterised by its distinctive white, frost-like rim that surrounds the fruiting bodies and thread-like ascospores divided by multiple cross-walls. Modern molecular phylogenetics studies suggest that the current broad concept of Stictis will likely be split into several separate genera as the group undergoes taxonomic revision.

The Odontotremataceae are a family of fungi in the monotaxonomic order Odontotrematales. Species of this family have a widespread distribution, but are especially prevalent from northern temperate areas.

Robergea is a genus of fungi within the family Stictidaceae.

Cryptodiscus is a genus of fungi in the family Stictidaceae. These tiny fungi primarily decompose weathered wood, producing minute, cup-shaped fruiting bodies that remain mostly embedded within their substrate and open through small pores. Most species are wood-decaying saprotrophs found on bark-free branches and logs; one species forms thin, lichen-like crusts on soil and dead moss. The genus is distributed worldwide in boreal and temperate regions.

Gymnographopsis is a genus of lichen-forming fungi in the family Graphidaceae. It was circumscribed by American lichenologist Carroll William Dodge in 1967, with Gymnographopsis chilena assigned as the type species. These lichens form dull grey-olive to yellow-brown crusts on tree bark and are characterized by straight to weakly curved fruiting bodies whose sides appear brown-black and whose openings expose -like surfaces. The genus has a pantropical distribution, growing on shaded tree trunks and lower branches in evergreen forests, where their intolerance of heavy disturbance makes them usef

species of fungus

Aspidothelium is a genus of lichen-forming fungi in the family Thelenellaceae. All species in the genus have a tropical distribution and are crustose with a photobiont partner. Most Aspidothelium species are foliicolous (leaf-dwelling), although some corticolous (bark-dwelling) species are known, as well as a single saxicolous (rock-dwelling) member.

Odontotrema is a genus of fungi in the family Odontotremataceae.

Nanostictis is a genus of lichenicolous (lichen-dwelling) fungi in the family Stictidaceae. These tiny fungi produce minute fruiting bodies that remain embedded within their host lichens and are characterised by very slender, thread-like ascospores divided by multiple cross-walls. The genus contains nine species that parasitise various lichen hosts, though its relationship to similar genera remains uncertain due to the lack of molecular studies on any Nanostictis species.

Phaneromyces is a genus of lichen-forming fungi in the monotypic family Phaneromycetaceae (order Ostropales). Phaneromyces consists of two species known from temperate South America.

Cyanodermella is a genus of fungi within the family Stictidaceae. It contains five species.