The Russulales are an order of the Agaricomycetes,. According to the Dictionary of the Fungi, the order consists of 12 families, 80 genera, and 1767 species. According to Species Fungorum, the order contains 13 families, 117 genera, and 3,060 species.
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 Boletales are an order of Agaricomycetes containing over 1300 species with a diverse array of fruiting body types. The boletes are the best known members of this group, and until recently, the Boletales were thought to only contain boletes. The Boletales are now known to contain distinct groups of agarics, puffballs, and other fruiting-body types.
The Hymenochaetales are an order of fungi in the class Agaricomycetes. The order in its current sense is based on molecular research and not on any unifying morphological characteristics. According to one 2008 estimate, the Hymenochaetales contain around 600 species worldwide, mostly corticioid fungi and poroid fungi, but also including several clavarioid fungi and agarics. Species of economic importance include wood decay fungi in the genera Phellinus and Inonotus sensu lato, some of which may cause losses in forestry. Therapeutic properties are claimed for Inonotus obliquus ("chaga") and Phellinus linteus, both of which are now commercially marketed.
The Bondarzewiaceae are a family of fungi in the order Russulales. The type species for both its genus and the family as a whole, Bondarzewia montana, closely resembles members of Polyporales, but has ornamented spores like those of Lactarius or Russula. This characteristic suggested the relationship between physically dissimilar species that eventually led to the restructuring of Russulales using molecular phylogeny. According to the Dictionary of the Fungi, the family contains 8 genera and 48 species.
The Ustilaginales are an order of fungi within the class Ustilaginomycetes. The order contained 8 families, 49 genera, and 851 species in 2008.
The Suillaceae are a family of fungi in the order Boletales, containing the boletus-like Suillus, the small truffle-like Truncocolumella, as well as the monotypic genus Psiloboletinus. As of 2008, there are 54 species in the family. Gastrosuillus, once considered a distinct genus, has been shown with molecular analysis to be a recent evolutionary derivative of Suillus. Fuscoboletinus, described by Pomerleau and Smith in 1962, has also been subsumed into Suillus.
The Botryosphaeriaceae are a family of sac fungi (Ascomycetes), which is the type representative of the order Botryosphaeriales. According to a 2008 estimate, the family contains 26 genera and over 1500 species. Members of this order include notable plant pathogens.
The Mycenaceae are a family of fungi in the order Agaricales. According to the Dictionary of the Fungi, the family contains 10 genera and 705 species. This is one of several families that were separated from the Tricholomataceae as a result of phylogenetic analyses. Taxa in the Mycenaceae are saprobic, have a cosmopolitan distribution, and are found in almost all ecological zones. The family was circumscribed by Caspar van Overeem in 1926.
The Rhytismataceae are a family of fungi in the Rhytismatales order. It contains 55 genera and 728 species.
Lecidea is a genus of crustose lichens with a carbon-black ring or outer margin (exciple) around the fruiting body disc (apothecium), usually found growing on (saxicolous) or in (endolithic) rock. Lichens that have such a black exciple are called lecideine, meaning "like Lecidea, even if they are not in this genus. Members of the genus are commonly called disk lichens or tile lichens.
The Serpulaceae are a family of fungi in the Boletales order. According to the Dictionary of the Fungi, the family contains 4 genera and 20 species. However, a molecular phylogenetics study showed that the genus Neopaxillus, which was formerly placed in this family, belongs in the family Crepidotaceae in the order Agaricales.
Urceolaria is a genus of fungi in the Pezizales order. The relationship of this taxon to other taxa within the order is unknown, and it has not yet been placed with certainty into any family. The genus was described by the German mycologist Hermann Friedrich Bonorden in 1851. According to the Dictionary of the Fungi, the genus contains about 100 species.
Leucangium is a genus of ascomycete fungi. The genus was circumscribed by French mycologist Lucien Quélet in 1883. Although classified in the Helvellaceae in the past, molecular analysis indicates it is closely related to the genus Fischerula and Imaia, and therefore must be placed in the Morchellaceae. The genus includes two species, Leucangium ophthalmosporum Quél. and L. carthusianum Paol., and both of them produce sequestrate ascoma, globose to ellipsoidal ascus, and dark olive-colored to grayish green, smooth, fusiform ascospores.
Sphaerophorus a genus of lichenized fungi in the order Lecanorales.
Plicatura is a fungal genus in the order Agaricales. It is incertae sedis with respect to familial placement within the order, although Kirk and colleagues consider it likely aligned with either the Amylocorticiaceae or the Tricholomataceae. The genus, circumscribed by Charles Horton Peck in 1872, contains the single species Plicatura nivea.
The Leptosphaeriaceae are a family of fungi in the order Pleosporales. The family was circumscribed by mycologist Margaret E. Barr in 1987. According to the Dictionary of the Fungi, the family contained 8 genera and 302 species. The family has a widespread distribution, but is especially prevalent in temperate regions. Species are either saprobic or grow as nectrotrophs on the stems or leaves of plants.
Mesophellia is a genus of truffle-like fungi in the Mesophelliaceae family. The genus contains about 15 species that are found in Australia. Mesophellia was circumscribed by Miles Joseph Berkeley in 1857.
Endoperplexa is a genus of fungi of uncertain familial placement in the order Auriculariales. The Dictionary of the Fungi report four species, but an additional two species have since been described or transferred into the genus.
