Rust fungi

Pucciniales · 40 species · 8 families

In Québec, the order Pucciniales brings together 40 species of mushrooms, in 8 families. The stars? Yellow Witches Broom, Crown Rust and Mountain ash juniper rust, the most often observed. The richest region: Capitale-Nationale, with 22 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. Capitale-Nationale22
  2. Outaouais17
  3. Bas-Saint-Laurent16
  4. Côte-Nord11
  5. Montérégie11
  6. Estrie10
  7. Montréal8
  8. Gaspésie–Îles-de-la-Madeleine8
  9. Chaudière-Appalaches7
  10. Nord-du-Québec6
  11. Lanaudière5
  12. Saguenay–Lac-Saint-Jean4
  13. Laurentides4
  14. Abitibi-Témiscamingue3
  15. Laval3
  16. Centre-du-Québec3
  17. Mauricie2

Rust fungi 40

Pucciniales
Family