(from the article `plant`) ...capsule with peristome and operculum, columella, and stomata present, but elaters absent; between 10,000 and 14,000 species; representative genera ... ...may be borne at the tips (apices) of the main shoots or on special, lateral branchlets. Both bisexual and unisexual leafy shoots occur, depending ... [... Found on http://www.britannica.com/eb/a-z/m/104