Mosses are commonly confused with liverworts, hornworts and lichens.[7] Mosses are grouped with the hornworts and liverworts as "non-vascular" plants in a division, all of them having the haploid gametophyte generation as the dominant phase of the life cycle (though in fact many mosses have advanced vascular systems[8][9]). This contrasts with the pattern in all vascular plants (seed plants and pteridophytes), where the diploid sporophyte generation is dominant. Lichens may superficially resemble mosses, and sometimes have common names that include the word "moss" (e.g.,...