GILLED MUSHROOMS of the Pacific Northwest

Copyright © Pacific Northwest Key Council

The Pacific Northwest Council was founded in 1974. We have been producing keys to the gilled mushrooms of the Pacific Northwest since 1978. The following shows how they are organized.

The Key to Keys has two purposes.

  1. A mushroom can be keyed out to lead to the appropriate genus key or group key. This includes both gilled and non-gilled species.
  2. There are descriptions for miscellaneous species in small genera that are not included in any of the other keys. These include Asterophora, Bolbitius, Callistosporium, Calocybe, Cantharellula, Cantharocybe, Catathelasma, Clitocybula, Flammulina, Heliocybe, Leucopholiota, Macrocystidia, Naucoria, Omphaliaster, Phaeolepiota, Phaeomarasmius, Plicaturopsis, Pseudobaeospora, Pseudoclitocybe, Schizophyllum, Stagnicola, Tapinella, Tetrapyrgos, and Tubaria.

Many of the keys to gilled mushrooms are for a single genus. The keys to groups of genera are as follows:

  1. Entolomataceae includes Alboleptonia, Claudopus, Clitopilus, Entoloma, Inocephalus, Leptonia, Nolanea, Paraeccilia, Pouzarella, Rhodocybe, and Trichopilus.
  2. Gomphidiaceae includes Chroogomphus and Gomphidius.
  3. Strophariaceae (dark-spored) includes Hypholoma, Psilocybe, Stropharia, Melanotus, and Mythicomyces.
  4. Collybioid Species includes Collybia, Dendrocollybia, Gymnopus, and Rhodocollybia.
  5. Lepiota and Allies includes Chlorophyllum, Cystolepiota, Lepiota, Leucoagaricus, Leucocoprinus, and Melanophyllum.
  6. Marasmioid Species includes Baeospora, Crinipellis, Marasmiellus, Marasmius, Micromphale, and Strobilurus.
  7. Mycenoid Species includes Chromosera, Fayodia, Gamundia, Hemimycena, Hydropus, Mycena, Mycenella, Myxomphalia, Resinomycena, and Rickenella.
  8. Pleurotoid Species includes Cheimonophyllum, Hohenbuehelia, Hypsizygus, Ossicaulis, Panellus, Panus, Phyllotopsis, Pleurocybella, Pleurotus, and Resupinatus.

Some genera are not fully covered yet and comments are as follows:

Lorelei Norvell is working on a key to Omphalinoid species (Ampulloclitocybe, Arrhenia sensu lato, Chromosera, Chrysomphalina, Contumyces, Lichenomphalia, Loreleia, Omphalina sensu stricto, Pseudoarmillariella, Pseudoclitocybe, Rickenella, and some small species of Clitocybes, with possible mention of Fayodia, Gamundia, Myxomphalia, and Xeromphalina).

Ian Gibson and Drew Parker are working on a key to Pluteus. Drew Parker is working on completing the key to Tricholoma.

Cortinarius is a difficult genus with several hundred species in the Pacific Northwest. The key by Daniel Stuntz has been withdrawn because it is out of date. A key to common recognizable species is planned.

Clitocybe, Conocybe, Crepidotus, Galerina, Hebeloma, Lyophyllum, and Psathyrella are difficult genera in which the majority of species need to be identified with the microscope. Keys or descriptions for a limited number of species are presented.

An alphabetical index of the gilled genera follows.

Agaricus see Key to Agaricus I and Key to Agaricus II

Agrocybe see Key to Agrocybe

Alboleptonia see Key to Entolomataceae

Amanita see Key to Amanita

Ampulloclitocybe will be in Key to Keys

Arcangeliella see Key to Truffles & False Truffles

Armillaria see Key to Armillaria

Arrhenia see Key to Veined Fungi (sensu stricto), will be in Key to Omphalinoid Species (sensu lato)

Asterophora see Lyophyllum and Allies

Baeospora see Key to Marasmioid Species

Bolbitius see Key to Keys

Brauniellula see Key to Truffles & False Truffles

Callistosporium see Key to Keys

Calocybe see Lyophyllum and Allies

Camarophyllus see Key to Hygrophorus

Cantharellula see Key to Keys

Cantharocybe see Key to Keys

Catathelasma see Key to Keys

Cheimonophyllum see Key to Pleurotoid Species

Chlorophyllum see Key to Lepiota and Allies

Chromosera see Key to Mycenoid Species

Chroogomphus see Key to Gomphidiaceae

Chrysomphalina will be in Key to Omphalinoid Species

Claudopus see Key to Entolomataceae

Clitocybe see Key to Clitocybe

Clitocybula see Key to Keys

Clitopilus see Key to Entolomataceae

Collybia see Key to Collybioid Species

Conocybe see Notes on Conocybe

Contumyces will be in Key to Omphalinoid Species

Coprinellus see Key to Coprinus

Coprinopsis see Key to Coprinus

Coprinus see Key to Coprinus

Cortinarius previous key retired, new key planned to common recognizable species

Crepidotus see Notes on Crepidotus

Crinipellis see Key to Marasmioid Species

Cystangium see Key to Truffles & False Truffles

Cystoderma see Key to see Key to Cystoderma

Cystolepiota see Key to Lepiota and Allies

Daedalea see Key to Polypores

Daedaleopsis see Key to Polypores

Dendrocollybia see Key to Collybioid Species

Dermocybe included in Cortinarius

Endoptychum see Key to Truffles & False Truffles

Entoloma see Key to Entolomataceae

Fayodia see Key to Mycenoid Species

Flammulina see Key to Keys

Floccularia included in Key to Tricholoma

Galerina see Note on Galerina

Gamundia see Key to Mycenoid Species

Gloeophyllum see Key to Polypores

Gomphidius see Key to Gomphidiaceae

Gomphogaster see Key to Truffles & False Truffles

Gymnopilus see Key to Gymnopilus

Gymnopus see Key to Collybioid Species

Hebeloma see Notes on Hebeloma

Heliocybe see Key to Keys

Hemimycena see Key to Mycenoid Species

Hohenbuehelia see Key to Pleurotoid Species

Hydropus see Key to Mycenoid Species

Hygrocybe see Key to Hygrophorus

Hygrophoropsis see Notes on Gilled Boletes

Hygrophorus see Key to Hygrophorus

Hypholoma see Key to Strophariaceae (dark-spored)

Hypsizygus see Key to Pleurotoid Species and Lyophyllum and Allies

Inocephalus see Key to Entolomataceae

Inocybe see Key to Inocybe

Kuehneromyces see Key to Pholiota

Laccaria see Key to Laccaria

Lactarius see Key to Lactarius

Lentinellus see Key to Lentinellus and Neolentinus

Lentinus see Key to Lentinellus and Neolentinus

Lenzites see Key to Polypores

Lepiota see Key to Lepiota and Allies

Lepista see Key to Lepista

Leptonia see Key to Entolomataceae

Leratiomyces see Key to Strophariaceae (dark-spored)

Leucoagaricus see Key to Lepiota and Allies

Leucocoprinus see Key to Lepiota and Allies

Leucopaxillus see Key to Keys

Leucopholiota see Key to Keys

Lichenomphalia will be in Key to Omphalinoid Species

Limacella see Key to Limacella

Longula see Key to Truffles & False Truffles

Loreleia will be in Key to Omphalinoid Species

Lyophyllum see Lyophyllum and Allies

Macowanites see Key to Truffles & False Truffles

Macrocystidia see Key to Keys

Macrolepiota see Key to Lepiota and Allies

Marasmiellus see Key to Marasmioid Species

Marasmius see Key to Marasmioid Species

Megacollybia see Key to Tricholomopsis

Melanoleuca See Notes on Melanoleuca

Melanophyllum see Key to Lepiota and Allies

Melanotus see Key to Strophariaceae (dark-spored)

Micromphale see Key to Marasmioid Species

Montagnea see Key to Truffles & False Truffles

Mycena see Key to Mycenoid Species

Mycenella see Key to Mycenoid Species

Mythicomyces see Key to Strophariaceae (dark-spored)

Myxomphalia see Key to Mycenoid Species

Naucoria see Key to Keys

Neolentinus see Key to Lentinellus and Neolentinus

Nivatogastrium see Key to Truffles & False Truffles

Nolanea see see Key to Entolomataceae

Omphaliaster see Key to Keys

Omphalina will be in Key to Omphalinoid Species

Ossicaulis see Key to Pleurotoid Species and Lyophyllum and Allies

Pachylepyrium see Key to Pholiota

Panaeolina - see Key to Panaeolus

Panaeolus - see Key to Panaeolus

Panellus see Key to Pleurotoid Species

Panus see Key to Pleurotoid Species

Paraeccilia see Key to Entolomataceae

Parasola see Key to Coprinus

Paxillus see Notes on Gilled Boletes

Phaeocollybia see Key to Phaeocollybia

Phaeolepiota see Key to Keys

Phaeomarasmius see Key to Keys

Pholiota see Key to Pholiota

Phylloporus see Notes on Gilled Boletes

Phyllotopsis see Key to Pleurotoid Species

Pleurocybella see Key to Pleurotoid Species

Pleurotus see Key to Pleurotoid Species

Plicaturopsis see Key to Keys

Pluteus under construction by Drew Parker

Podaxis see Key to Truffles & False Truffles

Pouzarella see Key to Entolomataceae

Psathyrella see Psathyrella in the Pacific Northwest

Pseudoarmillariella will be in Key to Omphalinoid Species

Pseudobaeospora see Key to Keys

Pseudoclitocybe see Key to Keys, will be in Key to Omphalinoid Species

Psilocybe see Key to Strophariaceae (dark-spored)

Resinomycena see Key to Mycenoid Species

Resupinatus see Key to Pleurotoid Species

Rhodocollybia see Key to Collybioid Species

Rhodocybe see Key to Entolomataceae

Rickenella see Key to Mycenoid Species, will be in Key to Omphalinoid Species

Rozites should be included in Key to Cortinarius

Russula see Key to Russula (2 different ones)

Schizophyllum see Key to Keys

Setchelliogaster see Key to Truffles & False Truffles

Squamanita see Key to Squamanita

Stagnicola see Key to Keys

Strobilurus see Key to Marasmioid Species

Stropharia see Key to Strophariaceae (dark-spored)

Tapinella see Key to Keys

Tetrapyrgos see Key to Keys

Thaxterogaster see Key to Truffles & False Truffles

Tricholoma see Tricholoma

Tricholomopsis see Key to Tricholomopsis

Trichopilus see Key to Entolomataceae

Tubaria see Key to Keys

Volvariella see Key to Volvariella

Weraroa see Key to Truffles & False Truffles

Xeromphalina see Key to Xeromphalina

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