Moss (seed plants and pteridophytes), where the diploid sporophyte generation is dominant. Mosses are now classified on their own as the division Bryophyta. There are approximately 12,000 species. The main commercial significance of mosses is as the main constituent of peat (mostly the genus "Sphagnum"), although they are also used for decorative purposes, such as in gardens and in the florist trade. Traditional uses of mosses included as insulation and for the ability to absorb liquids up to 20 times their weight. Botanically, mosses are non-vascular plants in the land plant division Bryophyta. They are small (a few centimeters tall) herbaceous
Sphagnum palustre marshy meadows, but rarely in moors. The species often forms large carpets, sometimes bulge-shaped. It is often accompanied by "Sphagnum fimbriatum", "Sphagnum subnitens", and "Sphagnum squarrosum". "Sphagnum palustre" is invading the native habitat at Ka'ala, O'ahu, Hawai'i. It became established after a sample was brought to the island by a botanist in 1960. Although the environment does not allow the plant to reproduce sexually via spores, it is capable of spreading through vegetative reproduction. It currently occupies an area estimated at 17.3 acres. Coordinated eradication efforts have proved difficult. Sphagnum palustre is found all over the British Isles. It is