In Québec, the genus Psathyrella (family Psathyrellaceae) counts 11 species of mushrooms. The stars? Common Stump Brittlestem, Maroon Brittlestem and Psathyrella seminuda, the most often observed. The richest region: Montérégie, with 6 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.