In Québec, the genus Atrichum (family Polytrichaceae) counts 6 species of mosses. The stars? Atrichum moss, Undulate atrichum moss and Strongly Crispate Smoothcap, the most often observed. The richest region: Outaouais, with 6 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.