In Québec, the genus Grimmia (family Grimmiaceae) counts 8 species of mosses. The stars? North Grimmia, Donn's dry rock moss and Grimmia dry rock moss, the most often observed. The richest region: Nord-du-Québec, with 7 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.