Sphagnum cuspidatum has also been used as a "green" alternative to water purification in public swimming pools; it inhibits bacterial growth, and greatly reduces the amount of chlorine required to maintain sanitary water Sphagnum cuspidatum Sphagnum cuspidatum, the feathery bogmoss, toothed sphagnum, or toothed peat moss, is a peat moss found commonly in Great Britain, Norway, Sweden, the eastern coast of the United States, and in Colombia. "Sphagnum cuspidatum" is brown to greenish brown in color with narrow green stems. Individual plants are slender and weak-stemmed. They are moderately sized compared to other peat mosses. Aquatic forms are flaccid and plumose giving
Moss in cities. Examples would be "Rhytidiadelphus squarrosus", a garden weed in Vancouver and Seattle areas; "Bryum argenteum", the cosmopolitan sidewalk moss, and "Ceratodon purpureus", red roof moss, another cosmopolitan species. A few species are wholly aquatic, such as "Fontinalis antipyretica", common water moss; and others such as "Sphagnum" inhabit bogs, marshes and very slow-moving waterways. Such aquatic or semi-aquatic mosses can greatly exceed the normal range of lengths seen in terrestrial mosses. Individual plants or more long are common in "Sphagnum" species for example. Wherever they occur, mosses require liquid water for at least part of the year to complete