Fungi named in 1806

Mycena is a genus of about 500 species of fungi. Rarely more than a few centimeters in width, the mushrooms are characterized by a small conical or bell-shaped cap and a thin fragile stem. Most are grey or brown, but a few species have brighter colours. Most have a translucent and striate cap, which rarely has an incurved margin. The gills are attached and usually have cystidia. Some species, like M. haematopus, exude a latex when the stem is broken, and many species have a chlorine or radish-like odour. They produce a white spore print. The species are saprotrophic. Their edibility varies,

Ustilago is a genus of approximately 200 smut fungi, which are parasitic on grasses. 170 species are accepted by Wijayawardene et al. 2020; After phylogenetic research certain species in Ustilago, Macalpinomyces, and other genera in the Ustilaginaceae clade have been moved to other genera such as Mycosarcoma.

Albugo is a genus of plant-parasitic oomycetes. Those are not true fungi (Eumycota), although many discussions of this organism still treat it as a fungus. The taxonomy of this genus is incomplete, but several species are plant pathogens. Albugo is one of three genera currently described in the family Albuginaceae, the taxonomy of many species is still in flux. This organism causes white rust or white blister diseases in above-ground plant tissues. While these organisms affect many types of plants, the destructive aspect of infection is limited to a few agricultural crops, including: beets

Arthonia is a genus of crustose lichens in the family Arthoniaceae. They are commonly called comma lichens.

Albugo candida, commonly known as white rust or white blister rust, is an obligate plant pathogen in the family Albuginaceae that infects Brassicaceae species. (Although called a "rust" and a fungus, it is an oomycete.) It has a relatively smaller genome than other oomycetes.

Lactifluus is one of three genera of mushroom-forming fungi containing species commonly named "milk-caps", the others being Lactarius and Multifurca. It has been separated from Lactarius based on molecular phylogenetic evidence but is very similar to that genus. There are roughly 150 known Lactifluus species, which have a mainly tropical distribution but are also found in the north temperate zone and Australasia. Some of them are edible mushrooms.

Aseroe is a small genus of basidiomycete fungi of the family Phallaceae, though sometimes placed in the separate family Clathraceae. The genus name is derived from the Ancient Greek words Asē/αση 'disgust' and roē/ροη 'juice'. The genus was described with the collection and description of the type species Aseroe rubra in 1800 by French botanist Jacques Labillardière. As with other stinkhorn-like fungi, mature fruiting bodies are covered with olive-brown slime, containing spores, which attracts flies. These fungi are common in mulch and are saprobic.

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