Fungi named in 1845

Lactarius subumbonatus is a member of the large milk-cap genus Lactarius in the order Russulales. It was first described scientifically by Sven Johan Lindgren in 1845.

Glomus is a genus of arbuscular mycorrhizal fungi, all of its species forming symbiotic relationships (mycorrhizae) with plant roots.

Abrothallus is a genus of lichenicolous (lichen-dwelling) fungi. It is the only genus in the monotypic family Abrothallaceae, which itself is the sole taxon in the order Abrothallales. Species produce small, blackish, nearly spherical fruiting bodies on the surface of their host lichens, often dusted with green or yellow powder (pruina). About 44 species are accepted, most of them parasites of leafy or shrubby macrolichens.

Disciseda is a genus of gasteroid fungi in the family Agaricaceae. It is a widely distributed genus that is prevalent in arid zones. Disciseda was circumscribed by mycologist Vassiliĭ Matveievitch Czernajew in 1845.

Lecanora muralis (Protoparmeliopsis muralis) is a waxy-looking, pale yellowish-green crustose lichen that usually grows in rosettes radiating from a center (placodioid) filled with disc-like yellowish-tan fruiting bodies (apothecia). It grows all over the world. It is extremely variable in its characteristics as a single taxon, and may represent a complex of species. The fruiting body parts have rims of tissue similar to that of the main nonfruiting body (thallus), which is called lecanorine. It is paler and greener than L. mellea, and more yellow than L. sierrae. In California, it may be the

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Stephensia is a genus of fungi in the family Pyronemataceae. It is treated by some as a synonym of Hydnocystis, with the type species, S. bombycina, being transferred to Hydnocystis.

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Pyxine sorediata, commonly known as mustard lichen, is a widely distributed species of foliose lichen in the family Caliciaceae. It has a subtropical to warm temperate distribution, and grows on bark, rocks, and moss as substrates. Pyxine sorediata has been reported from regions of North America, Europe, Africa, Asia, and Australasia.

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.

Pertusaria pertusa is a species of lichen-forming fungus in the family Pertusariaceae. It is native to Eurasia and Southern Africa.

Myriangium is a genus of fungi within the family Myriangiaceae. Species Myriangium citri Henn. is an entomopathogenic fungi of armoured scale insects on citrus trees in coastal New South Wales, Australia.

Lecanora polytropa, the granite-speck rim lichen, is a species of saxicolous (rock-dwelling), crustose lichen in the family Lecanoraceae. A small, inconspicuous species that grows in the cracks of rock surfaces, it has a cosmopolitan distribution and has been recorded on all continents, including Antarctica.

Endoptychum is a genus of secotioid fungi in the family Agaricaceae. Like the majority of secotioid taxa, the individual species of Endoptychum are thought to be recent mutations from agaricoid species, hence, Endoptychum is likely not a valid monophyletic genus. So far, molecular phylogeny and morphological study has revealed that E. depressum is a species of Agaricus and E. agaricoides, the type species, is a species of Chlorophyllum. E. depressum has been renamed Agaricus inapertus Vellinga. Recognition of the name Chlorophyllum agaricoides (Czern.) Vellinga would entail deprecation of the

Stegobolus is a genus of lichen-forming fungi in the family Graphidaceae. Established in 1845 by the French botanist Camille Montagne, the genus contains 16 species distinguished by their unique fruiting structures that initially appear drum-shaped and closed, later bursting open by shedding their roof-like covering. These bark-dwelling lichens are found in humid tropical and warm temperate forests worldwide, where they serve as indicators of undisturbed woodland habitats due to their sensitivity to canopy opening and drought.

Phylacia is a genus of fungi in the family Xylariaceae.

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Lembosia is a genus of fungi in the Asterinaceae family. The relationship of this taxon to other taxa within the class is unknown (incertae sedis), and it has not yet been placed with certainty into any order.

Ileodictyon gracile is a saprotrophic species of fungus in the family Phallaceae. It is native to Australia, where it is commonly known as the smooth cage fungus, with reference to its basidiocarps (fruit bodies), shaped like a ball with interlaced or latticed branches partly covered on the inner surfaces with a foetid slime layer containing basidiospores. Ileodictyon gracile is similar to and sometimes confused with Ileodictyon cibarium, which is also native to Australia. Fruit bodies of both species are whitish, mesh balls of similar size, but can be differentiated by characteristics of the

Hydnocystis is a genus of truffle-like fungi in the family Pyronemataceae. A number of species in this genus have been transferred to other genera, and as of 2017, only two are undisputedly a part of this genus, H. piligera and H. japonica. Stephensia is treated by some as a synonym of this genus.

Genabea is a genus of fungus in the family Pyronemataceae. The genus contains five species, and the type species is Genabea fragilis, a mycorrhizal truffle-like fungus found in Europe and North America.

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Asterina is a large genus of fungi in the family Asterinaceae family. It was then placed in order Asterinales later. The genus was circumscribed by French mycologist Joseph-Henri Léveillé in 1845. The genus was originally introduced as a member of the Sphaeriaceae family (a former family with parasitic fungi having globose and sometimes necked or beaked perithecia) with four species; Asterina azarae, Asterina compacta, Asterina pulla and the type Asterina melastomatis. It is currently the largest genus in Asterinaceae family, but only nine species have DNA sequence data available in GenBank

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