In the past, the three groups of non-vascular plants (mosses, liverworts and hornworts) were put together in a taxonomic unit (Division Bryophyta = ‘Bryophytes’ = non-vascular plants), but there is little evidence that this is a unified group other than they are all plants. It is generally found in forests but can also be found on soil or gravel in open areas. Thus it is a useful example of what mosses are about. It is large for a moss and regularly exhibits both the haploid and the diploid phases of its life cycle.
Polytrichium is a common moss that occurs across all of North America.
Gametophyte plants (green), a few with sporophytes emerging from the top of female plants.
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