Taxa described in 1809

Penicillium () is a genus of ascomycetous fungi that is part of the mycobiome of many species and is of major importance in the natural environment, in food spoilage, and in food and drug production.

Lecanora is a genus of lichen commonly called rim lichens. Lichens in the genus Squamarina are also called rim lichens. Members of the genus have roughly circular fruiting discs (apothecia) with rims that have photosynthetic tissue similar to that of the nonfruiting part of the lichen body (thallus). Other lichens with apothecia having margins made of thallus-like tissue are called lecanorine.

Ramalina is a genus of greenish fruticose lichens that grow in the form of flattened, strap-like branches. Members of the genus are commonly called strap lichens or cartilage lichens. Apothecia are lecanorine.

Evernia is a genus of bushy lichens in the family Parmeliaceae. Oakmoss Evernia prunastri is used as a fixative agent in Eau de Cologne within the perfume industry. It is green on top and white on bottom, and divides evenly into "forks"; it becomes very soft when wet. It is not to be confused with Ramalina, which is straplike, stiff and bristly, green on top and bottom, and divides unevenly. Evernia is an abundant genus, found growing on trees.

Petrobius is a genus of jumping bristletails in the family Machilidae. Many of these ancestral insects are restricted to rocky shorelines especially of northern Europe and America.

Geotrichum is a genus of fungi found worldwide in soil, water, air, and sewage, as well as in plants, cereals, and dairy products; it is also commonly found in normal human flora and is isolated from sputum and feces. It was first described in 1809 by Johann Heinrich Friedrich Link.

genus of fungi

Opegrapha is a genus of mostly lichen-forming fungi in the family Opegraphaceae. These lichens form crusty patches on bark, rock, or other lichens, and are easily recognised by their distinctive black, slit-like or rounded fruiting bodies that look like tiny scribbles or dashes on the surface. The genus includes about 150 accepted species found worldwide, with most partnering with orange-pigmented green algae, though some live as parasites on other lichens. Opegrapha species are distinguished from similar genera by their combination of branched internal filaments, ascospores with multiple sept

Endogone is a genus of fungi in the family Endogonaceae of the division Mucoromycota. The genus has a widespread distribution, especially in temperate regions, and contains about 20 species.

The Hesperiini or branded grass skippers are a tribe in the Hesperiinae subfamily of skipper butterflies. They are known as branded grass skippers because all the males in this tribe feature a black diagonal brand of scales on their forewings that exude pheromones to attract females. Some subspecies of Hesperiini, such as Thespius Maacki, are found in high-altitude grasslands in areas like Araçatuba Mountain in Paraná, Brazil.

Circinaria is a genus of lichen-forming fungi in the family Megasporaceae. It was circumscribed by Johann Heinrich Friedrich Link in 1809.

Thamnidium is a genus of fungi belonging to the family Mucoraceae.

genus of fungi

Eurotium is a genus of fungi belonging to the family Aspergillaceae.