Kebnat

Catathelasma

2 species

In Québec, the genus Catathelasma (family Biannulariaceae) counts 2 species of mushrooms. The stars? Armillaire ventru and Imperial Mushroom, the most often observed. The richest region: Chaudière-Appalaches, with 2 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.

Species observed by region

Where do the observations come from?

  • Mostly iNaturalist : photos taken by people all over Québec, with the species confirmed by the community.
  • Other public sources : such as eBird for birds and the provincial forest inventories, gathered by GBIF, the global biodiversity data network.
  • What we keep : confirmed observations, with an exact position (not blurred to protect a rare species), that their author allows to be reused.
  • One place counts once : several observations of the same species at the same spot (within 11 m) count as one.
  • So our numbers are lower : than iNaturalist’s total. A region without observations does not mean the species does not live there.

Data downloaded in September 2026.

  1. Chaudière-Appalaches2
  2. Bas-Saint-Laurent1
  3. Saguenay–Lac-Saint-Jean1
  4. Capitale-Nationale1
  5. Estrie1
  6. Côte-Nord1
  7. Nord-du-Québec1
  8. Gaspésie–Îles-de-la-Madeleine1
  9. Lanaudière1

Catathelasma 2

Agaricales
All2,745Agaricales945Lecanorales276Russulales170Polyporales149Boletales143Helotiales119Pezizales116Peltigerales77Hypocreales68Hymenochaetales58Caliciales56Pucciniales40Cantharellales35Xylariales31Pertusariales29Thelephorales29Gomphales27Teloschistales26Umbilicariales20Lecideales17Dacrymycetales15Verrucariales15Geastrales12Ostropales12Phallales12Arthoniales11Auriculariales11Geoglossales11Rhytismatales11Taphrinales11Leotiales10Rhizocarpales10Gloeophyllales7Mycosphaerellales7Pleosporales7Trapeliales7Acarosporales6Candelariales6Coniocybales6Entomophthorales6Eurotiales6Mycocaliciales6Tremellales6Diaporthales5Exobasidiales5Sebacinales5Botryosphaeriales4Corticiales4Mucorales4Baeomycetales3Hysteriales3Lichinales3Monoblastiales3Orbiliales3Tubeufiales3Venturiales3Abrothallales2Amylocorticiales2Atheliales2Atractiellales2Chaetosphaeriales2Hymeneliales2Neolectales2Patellariales2Platygloeales2Sarrameanales2Sordariales2Trypetheliales2Acrospermales1Bartheletiales1Boliniales1Capnodiales1Catinellales1Coronophorales1Cystofilobasidiales1Endogonales1Erythrobasidiales1Filobasidiales1Glomerellales1Hysterangiales1Laboulbeniales1Marthamycetales1Melanosporales1Onygenales1Ophiostomatales1Phacidiales1Phyllachorales1Pyrenulales1Sareales1Sclerococcales1Synchytriales1Thelebolales1Trechisporales1Tremellodendropsidales1Ustilaginales1Xenasmatellales1Unknown classification3
Biannulariaceae
All945Cortinariaceae91Hygrophoraceae79Mycenaceae58Amanitaceae54Hymenogastraceae52Tricholomataceae51Psathyrellaceae48Entolomataceae44Inocybaceae40Agaricaceae39Strophariaceae38Pluteaceae30Omphalotaceae26Clavariaceae23Lycoperdaceae21Physalacriaceae21Clitocybaceae19Lyophyllaceae19Porotheleaceae17Marasmiaceae16Verrucosporaceae15Bolbitiaceae13Crepidotaceae11Hydnangiaceae11Pleurotaceae10Phyllotopsidaceae9Galeropsidaceae7Tubariaceae7Melanoleucaceae6Nidulariaceae6Xeromphalinaceae6Cyphellaceae5Cyphellopsidaceae5Omphalinaceae5Volvariellaceae5Pseudoclitocybaceae4Biannulariaceae3Fistulinaceae3Hemimycenaceae3Resupinataceae3Squamanitaceae3Callistosporiaceae2Coprinaceae2Fayodiaceae2Pterulaceae2Sarcomyxaceae2Battarreaceae1Campanellaceae1Cystostereaceae1Mythicomycetaceae1Radulomycetaceae1Schizophyllaceae1Stephanosporaceae1Typhulaceae1Unknown classification1
Armillaire ventru19 observations
Imperial Mushroom5 observations