Moss among three divisions: Bryophyta, Marchantiophyta and Anthocerotophyta. The current circumscription of Bryophyta includes only the mosses. The mosses, now division Bryophyta (Bryophyta sensu stricto), are divided into eight classes: Six of the eight classes contain only one or two genera each. Polytrichopsida includes 23 genera, and Bryopsida includes the majority of moss diversity with over 95% of moss species belonging to this class. The Sphagnopsida, the peat-mosses, comprise the two living genera "Ambuchanania" and "Sphagnum", as well as fossil taxa. However, the genus "Sphagnum" is a diverse, widespread, and economically important one. These large mosses form extensive acidic bogs in
Sphagnum cuspidatum battlefield to prevent infection. Sphagnum is also used to decorate hanging baskets, as a packing material in the shipping industry, and in some parts of Africa it is even used to pad cushions and mattresses. Since the moss is capable of holding many times its weight in water, it is useful as a potting material for new plants since it provides consistent moisture. It can also be used in conjunction with decaying organic matter as an effective medium for germinating seeds. Some species of Sphagnum moss in general have been used as a fuel source in temperate climates. Sphagnum moss