The Agaricales are an order of fungi in the division Basidiomycota. As originally conceived, the order contained all the agarics, but subsequent research has shown that not all agarics are closely related and some belong in other orders, such as the Russulales and Boletales. Conversely, DNA research has also shown that many non-agarics, including some of the clavarioid fungi and gasteroid fungi belong within the Agaricales. The order has 46 extant families, more than 400 genera, and over 25,000 described species, along with six extinct genera known only from the fossil record. Species in the Agaricales range from the familiar Agaricus bisporus and the deadly Amanita virosa to the coral-like Clavaria zollingeri and bracket-like Fistulina hepatica.
The Omphalotaceae are a family of fungi in the order Agaricales. Basidiocarps are most frequently agarics, but occasionally corticioid or poroid.
The Hygrophoraceae are a family of fungi in the order Agaricales. Originally conceived as containing white-spored, thick-gilled agarics, including Hygrophorus and Hygrocybe species, DNA evidence has extended the limits of the family, so it now contains not only agarics, but also basidiolichens and corticioid fungi. Species are thus diverse and are variously ectomycorrhizal, lichenized, associated with mosses, or saprotrophic. The family contains 34 genera and over 1000 species. None is of any great economic importance, though fruit bodies of some Hygrocybe and Hygrophorus species are considered edible and may be collected for sale in local markets.
Hygrophorus is a genus of agarics in the family Hygrophoraceae. Called "woodwaxes" in the UK or "waxy caps" in North America, basidiocarps are typically fleshy, often with slimy caps and lamellae that are broadly attached to decurrent. All species are ground-dwelling and ectomycorrhizal and are typically found in woodland. Around 100 species are recognized worldwide. Fruit bodies of several species are considered edible and are sometimes offered for sale in local markets.
Hygrophoropsis aurantiaca, commonly known as the false chanterelle, is a species of fungus in the family Hygrophoropsidaceae. It is found across several continents, growing in woodland and heathland, and sometimes on woodchips used in gardening and landscaping. Fruit bodies (mushrooms) are yellow–orange, with a funnel-shaped cap up to 8 cm across that has a felt-like surface. The thin, often forked gills on the underside of the cap run partway down the length of the otherwise smooth stipe. Reports on the mushroom's edibility vary – it is considered poisonous, but has historically been eaten in parts of Europe and the Americas.
The Tricholomataceae are a large family of fungi within the order Agaricales. Originally a classic "wastebasket taxon", the family included any white-, yellow-, or pink-spored genera in the Agaricales not already classified as belonging to e.g. the Amanitaceae, Lepiotaceae, Hygrophoraceae, Pluteaceae, or Entolomataceae.
The genus Stropharia is a group of medium to large agarics with a distinct membranous ring on the stipe. Well-known members of this genus include the edible Stropharia rugosoannulata and the blue-green verdigris agarics. Stropharia are not generally regarded as good to eat and there are doubts over the edibility of several species. However the species Stropharia rugosoannulata is regarded as prized and delicious when young, and is now the premier mushroom for outdoor bed culture by mycophiles in temperate climates.
Melanoleuca is a poorly known genus of saprotrophic mushrooms traditionally classified in the family Tricholomataceae. Most are small to medium sized, white, brown, ocher or gray with a cylindrical to subcylindrical stipe and white to pale yellowish gills. The basidiospores are ellipsoid and ornamented with amyloid warts. Melanoleuca is considered a difficult group to study due to their macroscopic similarities among species and the need of a thorough microscopic analysis to separate species. DNA studies have determined that this genus is closely related to Amanita and Pluteus and that it does not belong to the family Tricholomataceae.
The Physalacriaceae are a family of fungi in the order Agaricales. Species in the family have a widespread distribution, ranging from the Arctic, (Rhizomarasmius), to the tropics, e.g. Gloiocephala, and from marine sites (Mycaureola) and fresh waters (Gloiocephala) to semiarid forests (Xerula).
Hygrophoropsis is a genus of gilled fungi in the family Hygrophoropsidaceae. It was circumscribed in 1888 to contain the type species, H. aurantiaca, a widespread fungus that, based on its appearance, has been affiliated with Cantharellus, Clitocybe, and Paxillus. Modern molecular phylogenetic analysis shows that the genus belongs to the suborder Coniophorineae of the order Boletales.
Chromosera is a genus of fungi in the family Hygrophoraceae. Within the family Hygrophoraceae it is closely related to the genus Gloioxanthomyces. It contains five species. The generic name honors the mycologist Meinhard Moser, and also alludes (chromos) to the distinct coloration of the mushrooms, by overlapping 'chromos' with 'Moser', hence Chromosera.
Cantharocybe is a genus of mushroom-forming fungi in the family Hygrophoraceae. The genus was described by American mycologists Howard E. Bigelow and Alexander H. Smith in 1973. Cantharocybe contains three species: the type C. gruberi, and C. brunneovelutina from Belize, reported as new to science in 2011, and C. virosa, transferred from "Megacollybia", and found in Bangladesh and India.
Volvopluteus is a genus of small to medium-sized or big saprotrophic mushrooms growing worldwide. The genus has been segregated from Volvariella with which it shares some morphological characteristics such as the presence of a volva and a pink to pink-brown spore print. Phylogenetic analyses of DNA data have shown that Volvopluteus is closely related to Pluteus and both genera currently are classified in the family Pluteaceae, while Volvariella is not closely related to either genus and its position in the Agaricales is still uncertain.
Bogbodia is a bog-inhabiting agaric fungal genus that colonizes peat and Sphagnum and produces tan-colored fruit bodies. The only species in the genus is Bogbodia uda. Characteristically it forms chrysocystidia and rather large, finely roughened, violaceous basidiospores each with a poorly defined germ pore. The genus differs from Hypholoma which has smaller, smooth basidiospores and typically have cespitose fruit bodies and decay wood. Phylogenetically, Bogbodia is distinct from Hypholoma, Pholiota, and Leratiomyces.
Mycopan is one of several genera of agaric fungi (mushrooms) that were formerly classified in the genus Hydropus or Mycena. Mycopan is currently monotypic, containing the single species Mycopan scabripes. It produces dusky colored fruit bodies that are mycenoid, but lack amyloid or dextrinoid tissues except for the amyloid basidiospores. Its stipe is notably scruffy from cystidioid end cells and unlike true Hydropus it does not bleed clear fluid. Phylogenetically, Mycopan is distant from the Mycenaceae and the type of that family, Mycena, and it is not with the type of Hydropus, Hydropus fuliginarius. Mycopan grouped closest to Baeospora. Baeospora was shown to be in the Cyphellaceae by Matheny and colleagues. Mycopan scabripes grows from debris in forest floors in North America and Europe.
Phloeomana is a bark-inhabiting agaric fungal genus that produces fuscous-colored to whitish mycenoid to omphalinoid fruit bodies in temperate forests. In addition to the type species Phloeomana speirea, 4 other species, P. alba, P. clavata, P. hiemalis and P. minutula, have been placed in the genus. The genus is characterized by nonamyloid smooth, hyaline (translucent) basidiospores and tissues, poorly to moderately differentiated cheilocystidia, diverticulate pileipellis hyphae and general smooth stipe hyphae with scattered caulocystidia. It is one of several mushroom genera formerly classified most recently in Mycena, Omphalina, Hydropus, or Marasmiellus. Phylogenetically, Phloeomana is distant from the Mycenaceae and is closest to a clade or group that includes other former members of Mycena now in Atheniella and Hemimycena clearly excluded from the Mycenaceae and tentatively classified in the Porotheleaceae.
Stagnicola is an agaric fungal genus that contains the single species Stagnicola perplexa. This fungus colonizes plant debris in wet coniferous forest floor depressions and shallow pools, and fruits after the pools drain or dry in late summer to early fall in North America and Europe. The genus is characterized by smooth, yellowish brown basidiospores lacking a germ pore, and a naucorioid appearance, with brownish mycelium at the base of the stems. Phylogenetically, Stagnicola appeared rather isolated and proved to be closest to Mythicomyces and Mythicomyces was closest to the Psathyrellaceae. In 2019 the two genera were shown to be closely related and placed in a new family, Mythicomycetaceae sister to the Psathyrellaceae.
Eonema is a fungal genus in the family Hygrophoraceae. It is monotypic, consisting of the single corticioid species Eonema pyriforme. This fungus was previously classified in the genus Athelia until molecular analysis demonstrated that it was unrelated to the Atheliales and instead nested within the Hygrophoraceae.
Flammula is a dark brown-spored genus of mushrooms that cause a decay of trees, on whose bases they often fruit, forming clusters of yellowish brown mushrooms.
