© Jens H. Petersen, Department of Systematic Botany, Biological Institute, University of Aarhus, Denmark

This outline of the basidiomycota is basically the families of J.H. Petersen 1995 ("Svamperiget") and H. Knudsen 1995 ("Taxonomy of the basidiomycetes in Nordic Macromycetes" - Symb. Bot. Ups XXX (3): 169-191) fitted into the tree of David S. Hibbett, Elizabeth M. Pine, Ewald Langer, Gitta Langer & Michael J. Donoghue ("Evolution of gilled mushrooms and puffballs inferred from ribosomal DNA sequences" - Proc. Natl. Acad. Sci. USA, Vol. 94, pp. 12002-12006 (1997)).

The system of the Teliomycotina, Ustilagomycotina and Heterobasidiomycetes which are not included in Hibbet et al. is mainly based on "Jelly fungi, then and now!" (K. Wells 1994, Mycologia 86 : 18-48).

To construct this experimental arrangement, the taxa included in Hibbett et al. are placed in the families used by Knudsen or Petersen. These families are then placed into a system of higher taxa reflecting the branching pattern of the tree. Generally the other members of the families have had to follow the analyzed taxa. In the overview, the sequenced taxa are marked with a link to the tree (as Bjerkandera T) making it easy to se which taxa are the key taxa of the system.

A number of problems is connected to the used procedure. Firstly, the number of analyzed taxa is still low and we can not be certain, that other members of the families in Knudsens and Petersens systems actually belong together with the analyzed species. Secondly, a number of very large groups, e.g. the Tricholomatales, have no representatives in the tree, and are thus placed in their traditional position. Thirdly, it is impossible to rank the groups so that sistergroups are given the same rank, and the groups are thus placed in a rather subjective system of supraorders, orders and families.

I have chosen to avoid poly- and paraphyletic groups. This does, however, result in an number of monogeneric groups, e.g. the "Laxitextales". In some cases, I have renounced form assigning families/orders to such isolated, monogeneric taxons (e.g. Oxyporus) but have just placed the genus in approximately the correct position.

An experimental arrangement like this is (like all systems) guaranteed to get outdated rather fast. It is my intention to revise the arrangement whenever new trees emerge. Because of the fast evolution of the tree, it is meaningless to start describing new higher taxa at this point. I thus accept to use a number of taxa which are not validly published. These are put in quotation marks ("x").

I hope that this alternative system can provide inspiration to new studies in fungal phylogenetics. At least it may be helpful pinpointing where new sequences are needed the most.

Symbols :
Link to a site with comments on the genus: L
Link to a tree : T
Genera containing lichenized species are coloured yellow
Genera containing mycorrhizal species are coloured green
Genera containing biotrophic parasites species are coloured red

	Teliomycotina
	Teliomycetes
		Uredinales
			Melampsoraceae
				Coleosporium, Cronartium, Crysomyxa, Milesina, Hyalospora, Melampsora, Melampsorella, Melampsoridium, Pucciniastrum, Uredinopsis
			Pucciniaceae
				Cumminsiella, Endophyllum, Frommea, Gymnoconia, Gymnosporangium, Kuehneola, Miyagia, Nyssopsora, Ochrospora, Phragmidium, Puccinia, Trachyspora, Tranzschelia, Triphragmium, Uromyces, Xenodochus
		Platygloeales
			Cystobasidiaceae
				Eocronartium, Helicobasidium, Herpobasidium
			Saccoblastiaceae
				Achroomyces, Helicogloea
		Atractiellales
			Phleogenaceae
				Phleogena
		Septobasidiales
			Septobasidiaceae
		Exobasidiales
			Exobasidiaceae
				Exobasidium

	Ustilagomycotina
	Ustilagomycetes
		Ustilaginales
			Ustilagliaceae
				Anthracoidea, Farysia, Schizonella, Sphacelotheca, Sporisorium, Thecaphora, Tolyposporium, Ustilago
		Tilletiales
			Tilletiaceae
				Burrilia, Doassansia, Doassansiopsis, Entorrhiza, Entyloma, Melanothaenium, Nannfeldtiomyces, Schroeteria, Tracya, Tilletia, Urocystis

	Basidiomycotina
	Heterobasidiomycetes
		Ceratobasidiales
			Ceratobasidiaceae
				Ceratobasidium, Oliveonia, Sebacinella, Thanatephorus, Uthatobasidium
		Tulasnellales
			Tulasnellaceae
				Tulasnella
		Dacryomycetales
			Dacryomycetaceae
				Calocera, Cerinomyces, Dacryomyces T, Ditiola, Femsjonia
		Auriculariales
			Exidiaceae
				Basidiodendron, Craterocolla, Eichleriella, Exidia, Exidiopsis
			Auriculariaceae
				Auricularia T
			Hyaloriaceae
				Aporpium, Heterochaetella, Myxarium, Protodontia, Pseudohydnum, Stypella, Tremiscus
			Sebacinaceae
				Sebacina
			Tremellodendropsidaceae
				Tremellodendropsis
		Tremellales
			Tremellaceae
				Tremella T, Xenolachne
			Syzygosporaceae
				Carcinomyces, Christiansenia, Syzygospora
			Filobasidiaceae
				Filobasidium

	Homobasidiomycetes
		"GOMPHANAE"
		Gomphales
			Gomphaceae
				Clavariadelphus T, Gomphus T, Kavinia, Lentaria, Ramaria T, Trechispora

		Phallales
			Clathraceae
				Clathrus
			Hysterangiaceae
				Hysterangium
			Phallaceae
				Mutinus, Phallus

		"Sphaerobolales"
			Sphaerobolaceae
				Sphaerobolus T

		"Geastrales"
			Geastraceae
				Geastrum T

		"CANTHARELLANAE"
		Cantharellales
			Clavariaceae
				Clavaria, Clavulinopsis, Multiclavula T T (not known from DK), Ramariopsis
			Clavulinaceae
				Clavulicium, Clavulina T
			Cantharellaceae
				Cantharellus T  L, Craterellus, Hydnum T, Pseudocraterellus
			? Pterulaceae
				Pterula
			? Physalacriaceae
				Physalacria

		Botryobasidiales
			Botryobasidiaceae
				Botryobasidium T L, Botryohypochnus

		?	?	Gloeophyllum T

		"HERICIANAE"
		Hericiales
			Auriscalpiaceae
				Auriscalpium T, Clavicorona T, Lentinellus T
			Hericiaceae
				? Ceratellopsis, Creolophus, Dentipellis, Hericium T, Mucronella

		"Gloeocystidiales"
			Gloeocystidiaceae
				Boidinia, Gloeocystidiellum T, Gloiothele, Scytinostromella, Vesiculomyces
			Aleurodiscaceae
				Aleurodiscus T, Dendrothele, Epithele, Laeticorticium, Laetisaria, Radulomyces, Terana, Vuilleminia
			Stereaceae
				Stereum T, Xylobolus
			Peniophoraceae
				Amylostereum, Lopharia, Peniophora T, Scytinostroma T,
			Perenniporiaceae
				Hapaloporus, Heterobasidion T, Pachykytospora, Perenniporia
			Russulaceae
				Lactarius, Russula T, Elasmomyces (not known to DK),

		"Laxitextales"
			"Laxitextaceae"
				Laxitextum T

		"HYMENOCHAETANAE"
		Hyphodermatales
			Hypodermataceae
				Basidioradulum T, Bulbillomyces, Gloehypochnicium, Hyphoderma, Hyphodermella, Hypochnicium, Merulicium,
			Cystostereaceae
				(no genera in DK- Crustomyces, Cystostereum, Fibricium)
			Chaetoporellaceae
				Amphinema, Antrodiella, Diplomitoporus, Hyphodontia T L, Hyphodontiella L, Piloderma, Skeletocutis
			Steccherinaceae
				Irpex, Steccherinum
		Hymenochaetales
			Hymenochaetaceae
				Asterostroma, Coltricia T, Hymenochaete, Inonotus T, Onnia, Phellinus T, Phylloporia
			"Trichapaceae"
				Trichaptum T
		? Lachnocladiales
			Lachnocladiaceae
				? Asterostroma, Dichostereum, Vararia
		?	?	Oxyporus T

		"PORIANAE"
		"Phaeolales"
			Phaeolaceae
				Amylosystis, Anomoporia, Buglossoporus, Laetiporus T, Leptoporus, Phaeolus T, Postia, Pycnoporellus
			"Antrodiaceae"
				Antrodia T,
			"Sparassidaceae"
				Sparassis T

		Fomitopsidales
			Fomitopsidaceae
				Daedalea T, Fomitopsis T, Piptoporus
			Coriolaceae
				Cerrena, Daedaleopsis, Datronia, Lenzites, Pycnoporus, Trametes T,
			Fomitaceae
				Fomes T
			Polyporaceae
				Dichomitus, Polyporus T
			Ganodermataceae
				Ganoderma T
			"Lentinaceae"
				Lentinus T,

		"Bjerkanderales"
			Bjerkanderaceae
				Abortiporus, Aurantioporus, Bjerkandera T, Ceriporiopsis, Grifola, Hapalopilus, Ischnoderma, Spongipellis, Tyromyces
			Phanerochaetaceae
				Phanerochaete T, Phlebiopsis, Scopuloides
			Rigidoporaceae
				Ceriporia T, Climacocystis, Climacodon, Physisporinus, Sarcodontia
			"Phlebiaceae"
				Gloeoporus, Mycoacia, Mycoaciella, Phlebia T, Plicatura, Resinicium
		?	?	Meripilus T
		?	?	Panus T
		?	?	Albatrellus T

		"THELEPHORANAE"
		Thelephorales
			Thelephoraceae
				Bankera, Boletopsis, Hydnellum T, Lazulinospora, Phellodon, Pseudotomentella, Sarcodon, Thelephora T, Tomentella, Tomentellastrum, Tomentellina, Tomentellopsis

		"BOLETANAE"
		Boletales
			Boletaceae
				Aureoboletus, Boletus T, Chalciporus, Leccinum, Phylloporus, Pulveroboletus
			Gautieriaceae
				Gautieria
			Gomphidiaceae
				Boletinus, Chroogomphus, Gomphidius, Rhizopogon, Suillus
			Paxillaceae
				Gyrodon, Gyroporus, Hygrophoropsis, Paxillus T
			Strobilomycetaceae
				Porphyrellus, Strobilomyces, Tylopilus
			Coniophoraceae
				Coniophora, Jaapia, Leucogyrophana, Pseudomerulius, Serpula
			Sclerodermataceae
				Pisolithus, Scleroderma T

		"AGARICANAE"
		Tricholomatales
			Tricholomataceae
				Armillaria L, Arrhenia T, Asterophora, Baeospora, Calocybe, Calyptella, Camarophyllopsis, Cantharellula, Cellypha, Cheimonophyllum, Clitocybe T, Collybia L, Crinipellis, Cyphellostereum, Cystoderma, Delicatula, Dermoloma, Fayodia, Flagelloscypha, Flammulina, Gerronema T, Haasiella, Hemimycena, Hohenbuehelia, Hydnangium, Hydropus, Hygrocybe T, Hygrophorus, Laccaria, Lepista, Leucopaxillus, Lyophyllum, Macrocystidia, Marasmiellus, Marasmius, Megacollybia, Melanoleuca, Micromphale, Mycena L, Mycenella, Omphaliaster, Omphalina T, Ossicaulis, Oudemansiella, Pleurocybella, Porpoloma, Pseudoclitocybe, Pseudomphalina, Resupinatus, Rickenella T, Rimbachia, Ripartites, Squamanita, Stigmatolemma, Strobilurus, Tephrocybe, Tricholoma, Tricholomopsis, Xeromphalina, Xerula
			Entolomataceae
				Clitopilus, Entoloma, Rhodocybe L

		Cortinariales
			Cortinariaceae
				Chromocyphella, Cortinarius T, Crepidotus, Descolea, Episphaeria, Flammulaster, Galerina, Gymnopilus, Hebeloma, Inocybe, Melanomphalia, Naucoria, Pellidiscus, Phaeocollybia, Phaeolepiota, Simocybe, Rozites, Tubaria, Merismodes
			Hymenogastraceae
				Hymenogaster
			Octavianinaceae
				Octavianina
			Pluteaceae
				Pluteus T, Volvariella
			Amanitaceae
				Amanita T, Limacella

		Strophariales
			Strophariaceae
				Hypholoma, Melanotus, Phaeomarasmius, Pholiota, Psilocybe, Stropharia T
			"Panellaceae"
				Panellus T,
			"Typhulaceae"
				Macrotyphula, Typhula T

		Polyporales
			Pleurotaceae
				Faerberia, Phyllotopsis, Pleurotus T
		Schizophyllales
			Schizophyllaceae
				Auriculariopsis, Lachnella, Schizophyllum T
			Stromatoscyphaceae
				Henningsomyces, Stromatoscypha, Fistulina T

		Agaricales
			Agaricaceae
				Agaricus T
			"Lepiotaceae"
				Chamaemyces, Cystolepiota, Lepiota T, Leucoagaricus, Leucocoprinus, Macrolepiota, Melanophyllum, Pseudobaeospora, Sericeomyces
			Coprinaceae
				Coprinus T, Panaeolus, Psathyrella
			Bolbitiaceae
				Agrocybe, Bolbitius, Conocybe
			Lycoperdaceae
				Bovista, Calvatia T, Disciseda, Langermannia, Lycoperdon T, Mycenastrum, Tulostoma T, Vascellum

		Nidulariales
			Nidulariaceae
				Crucibulum T, Cyathus T, Mycocalia, Nidularia
			Sphaerobolaceae
				Sphaerobolus T