In Québec, the genus Riccia (family Ricciaceae) counts 8 species of mosses. The stars? Floating Crystalwort, Cavernous Crystalwort and Violet Crystalwort, the most often observed. The richest region: Laval, with 6 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.