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 Clavariaceae are a family of fungi in the order Agaricales. Originally the family contained most of the clavarioid fungi, but in its current sense is more restricted, albeit with a greater diversity of basidiocarp forms. Basidiocarps are variously clavarioid or agaricoid (mushroom-shaped), less commonly corticioid or hydnoid.
The Clavulinaceae are a family of fungi in the order Cantharellales. The family is not well defined, but currently comprises species of clavarioid fungi as well as some corticioid fungi. These species are nutritionally diverse, some being ectomycorrhizal, others wood-rotting saprotrophs, others lichenized, and yet others lichenicolous.
The Auriscalpiaceae are a family of fungi in the order Russulales. Like much of the Russulales, it has been defined through molecular phylogeny, and includes physically dissimilar species, such as the tooth fungus Auriscalpium and the gilled, often shelf-like members of Lentinellus.
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.
Hydnellum is a genus of tooth fungi in the family Bankeraceae. Widely distributed in the Northern Hemisphere, the genus contains around 40 species. The fruitbodies of its members grow by slowly enveloping nearby bits of grass and vegetation. There is great variability in the form of Hydnellum fruitbodies, which are greatly influenced by environmental conditions such as rainfall and humidity, drying winds, and temperature. They are too tough and woody to eat comfortably. Several species have become the focus of increasing conservation concern following widespread declines in abundance.
Albatrellus is a genus of 19 species of mushroom-producing fungi in the family Albatrellaceae. Species are common in northern temperate forests, producing medium to large fleshy fruit bodies of various colors.
The Hydnaceae are a family of fungi in the order Cantharellales. Originally the family encompassed all species of fungi that produced basidiocarps having a hymenium consisting of slender, downward-hanging tapering extensions referred to as "spines" or "teeth", whether they were related or not. This artificial but often useful grouping is now more generally called the hydnoid or tooth fungi. In the strict, modern sense, the Hydnaceae are limited to the genus Hydnum and related genera, with basidiocarps having a toothed or poroid hymenium. Species in the family are ectomycorrhizal, forming a mutually beneficial relationship with the roots of trees and other plants. Hydnum repandum is an edible species, commercially collected in some countries and often marketed under the French name pied de mouton.
The Corticiaceae are a family of fungi in the order Corticiales. The family formerly included almost all the corticioid fungi, whether they were related or not, and as such was highly artificial. In its current sense, however, the name Corticiaceae is restricted to a comparatively small group of corticioid genera within the Corticiales.
Atheliaceae is a family of corticioid fungi placed under the monotypic order Atheliales. Both the order and the family were described by Walter Jülich in 1981. According to a 2008 estimate, the family contains 20 genera and approximately 100 species. However, many genera formerly considered to belong in the Atheliaceae have since been moved to other families, including Amylocorticiaceae, Albatrellaceae, and Hygrophoraceae. Despite being a relatively small group with inconspicuous forms, Atheliaceae members show great diversity in life strategies and are widespread in distribution. Additionally, being a group strictly composed of corticioid fungi, they may also provide insights on the evolution of fruiting body forms in basidiomycetes.
The Phanerochaetaceae are a family of mostly crust fungi in the order Polyporales.
The Echinodontiaceae are a family of crust fungi in the order Russulales. Species of this family, divided amongst two genera—Echinodontium and Laurilia—have a widespread distribution, although they are especially predominant in north temperate zones. They are parasitic or saprobic on wood, and may cause white rot of angiosperms and gymnosperms.
Boidinia is a genus of crust fungi in the family Russulaceae. The genus is widely distributed, and contains 10 species. Boidinia was described in 1982 with the type species Boidinia furfuracea. It is named in honor of French mycologist Jacques Boidin.
Gloeocystidiellum is a single genus of fungi in the monotypic Gloeocystidiellaceae family. Its species form crust-like, smooth fruitbodies. It is probably polyphyletic and may be restricted to the group around the type species G. porosum.
Ceriporia is a widely distributed genus of crust fungi.
Hericium is a genus of edible mushrooms in the family Hericiaceae. Species in this genus are white and fleshy and grow on dead or dying wood; fruiting bodies resemble a mass of fragile icicle-like spines that are suspended from either a branched supporting framework or from a tough, unbranched cushion of tissue. This distinctive structure has earned Hericium species a variety of common names—monkey's head, lion's mane, and bear's head are examples. Taxonomically, this genus was previously placed within the order Aphyllophorales, but recent molecular studies now place it in the Russulales.
Datronia is a genus of poroid crust fungi in the family Polyporaceae. The genus was circumscribed by Marinus Anton Donk in 1966, with Datronia mollis as the type species. Datronia fungi cause a white rot in hardwoods. Datronia contains six species found in northern temperate areas. The most recent addition, Datronia ustulatiligna, was described in 2015 from Himachal Pradesh in India.
Metasuchia is a major clade within the superorder Crocodylomorpha. It is split into two main groups, Ziphosuchia and Neosuchia. Notosuchia is an extinct group that contains primarily small-bodied Cretaceous taxa with heterodont dentition. Neosuchia includes the extant crocodylians and basal taxa, such as peirosaurids and pholidosaurids. It is phylogenetically defined by Sereno et al. (2001) as a clade containing Notosuchus terrestris, Crocodylus niloticus, and all descendants of their common ancestor.
The corticioid fungi are a group of fungi in the Basidiomycota typically having effused, smooth basidiocarps that are formed on the undersides of dead tree trunks or branches. They are sometimes colloquially called crust fungi or patch fungi. Originally such fungi were referred to the genus Corticium and subsequently to the family Corticiaceae, but it is now known that all corticioid species are not necessarily closely related. The fact that they look similar is an example of convergent evolution. Since they are often studied as a group, it is convenient to retain the informal (non-taxonomic) name of "corticioid fungi" and this term is frequently used in research papers and other texts.
Gloeopeniophorella is a genus of crust-like, wood-decaying fungi in the family Russulaceae. It contains six known species. Gloeopeniophorella was first described by Brazilian mycologist Johannes Rick in 1934.
