Fungi named in 1810

Oakmoss (scientific name Evernia prunastri) is a species of lichen. It can be found in many mountainous temperate forests throughout the Northern Hemisphere. Oakmoss grows primarily on the trunk and branches of oak trees, but is also commonly found on the bark of other deciduous trees and conifers such as fir and pine. The thalli of oakmoss are short and bushy, and grow together on bark to form large clumps. Oakmoss thallus is flat and strap-like. They are also highly branched, resembling the form of antlers. The colour of oakmoss ranges from green to a greenish-white when dry, and dark

Alectoria sarmentosa (common witch's-hair lichen) is a long-lived, perennial witch's-hair lichen. It is a light greenish colored and fruticose or bushy bodied. This epiphytic lichen belongs to the family Parmeliaceae and the suborder Lecanorineae, which includes six similar species. A. sarmentosa grows draped or strung over conifer tree limbs and deciduous shrub branches in Northern temperate rainforest. This lichen favors mature and old growth, wet conifer and hardwood forests with clean air. A. sarmentosa is sensitive to air pollution and used for air quality monitoring. Areas required by

Ramalina farinacea is a species of fruticose lichen in the family Ramalinaceae. It appears as small, shrub-like tufts typically 3–6 cm (1.2–2.4 in) long that hang from tree branches and trunks, particularly in woodland areas and on isolated trees. Distinguished by its flattened, yellow-green to grey-green branches with powdery white spots along the edges, this lichen is widespread throughout temperate regions, especially in coastal areas with oceanic climates. First scientifically described by Carl Linnaeus in 1753 and later reclassified by Erik Acharius in 1810, it is remarkably tolerant of

Ramalina fraxinea, the cartilage lichen, is a fruticose lichen with erect or pendulous thalli and branches that are flattened. Colour varies from pale green though yellow-grey to white-grey; apothecia are frequent and soralia may also be present.

Stereocaulon vesuvianum is a species of snow lichen belonging to the family Stereocaulaceae.

Nephroma parile is a species of foliose lichen belonging to the family Peltigeraceae. It has a cosmopolitan distribution.

Evernia divaricata is a species of lichen belonging to the family Parmeliaceae.

Roccella phycopsis is a species of fruticose lichen in the family Roccellaceae. A study of Roccella phycopsis in Tunisia revealed that it contains methyl orcellinate, a chemical compound of interest for its anti-inflammatory activity.

Nephroma resupinatum, commonly known as the pimpled kidney lichen, is a species of foliose lichen in the family Peltigeraceae. It was first described by Carl Linnaeus in his 1753 work Species Plantarum as Lichen resupinatus. Erik Acharius transferred it to the genus Nephroma in 1810. The lichen has a brown to greyish-brown thallus that is tomentose, especially at the tips of the lobes. The lobes, which measure 5–10 mm wide, are covered with lobules, particularly along the margins and the cracks in the thallus surface, as well as pimple-like bumps (sometimes clumped together) visible through

Ramalina fastigiata is a species of fruticose lichen in the family Ramalinaceae. It is a common species found in Asia, Europe, and North America.

Nephroma helveticum, the fringed kidney lichen, is a species of cyanolichen in the family Peltigeraceae. First described by Erik Acharius in 1810, it is part of a complex taxonomic group that includes N. tropicum. Modern molecular studies have shown that material previously identified as N. helveticum actually comprises two distinct species. The species occurs in moist, shady environments, particularly in old-growth forests. In North America, it is found at low elevations in riparian areas with coastal influence, while in Europe, where it is extremely rare, it occurs in montane-oceanic

Lecanora subcarnea is a species of crustose lichen in the family Lecanoraceae, first described in 1792 as Lichen subcarneus by Swedish botanist Samuel Liljeblad and later transferred to the genus Lecanora by Erik Acharius in 1810. The lichen forms a continuous white to pale yellowish-grey thallus with small areoles, distinctive pinkish to pale grey-brown apothecia (fruiting bodies) covered in white powdery crystals, and produces chemical compounds including atranorin and protocetraric acid that yield characteristic reactions in spot tests. It grows primarily in sheltered cracks of silica-rich

Lecanora cenisia is a species of crustose lichen in the family Lecanoraceae, first described by the Swedish lichenologist Erik Acharius in 1810 and named after Mont Cenis where it was discovered. The lichen forms a cream-white to pale grey granular thallus with distinctive red-brown to black (fruiting bodies) (apothecia) that feature persistent thalline margins containing conspicuous crystal clusters. It produces secondary metabolites including atranorin, chloroatranorin, and roccellic acid, which yield characteristic chemical reactions in spot tests. In the United Kingdom, it occurs locally

Lecanora caesiorubella is a species of crustose lichen in the family Lecanoraceae.

Lecanora argopholis is a species of crustose lichen in the family Lecanoraceae. It was originally named Parmelia atra var. argopholis by Erik Acharius in 1803, then transferred by him to the genus Lecanora in 1810. The lichen has a circumpolar distribution.

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Ramalina peruviana is a species of fruticose lichen in the family Ramalinaceae with a pantropical distribution. The lichen was first formally described by Erik Acharius in 1810, who wrote of its flat, compressed, branching thallus with narrow, undulating branches. It typically occurs on the bark of trees (corticolous) although occasionally it grows on rocks (saxicolous). Ramalina peruviana is widely distributed, found in subtropical and warm temperate regions across several continents. It has been recorded in diverse locations such as Pacific Islands, the southern United States, East Africa,

Lecanora albella is a species of crustose lichen belonging to the family Lecanoraceae. It has a cosmopolitan distribution.

Ramalina polymorpha is a strap lichen species. It is native to Europe and also occurs scatered in north America. The oxidative and cytogenetic effects of R. polymorpha water extract when introduced into human blood cells has been studied for potential use in the pharmaceutical industry or as a dietary supplement.

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Collema flaccidum is a species of lichen belonging to the family Collemataceae.

Calicium trabinellum, commonly known as the yellow-collar stubble lichen, is a widespread species of pin lichen in the family Caliciaceae. It was first described by Swedish lichenologist Erik Acharius in 1803 as Calicium xylonellum ß trabinellum. He made the new combination Calicium trabinellum in a later chapter of the same publication. The thallus of the lichen is usually visible as a stain on the wood upon which it is growing. The apothecium resembles a small black pin, with a stalk 0.5–0.9 mm (0.02–0.04 in) tall, holding a black mound of ascospores (called a mazaedium). The underside of

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