Mosses of North America

Sphagnum is a genus of approximately 380 accepted species of mosses, commonly known as sphagnum moss, also bog moss and quacker moss (although that term is also sometimes used for peat). Accumulations of Sphagnum can store water, since both living and dead plants can hold large quantities of water inside their cells; plants may hold 16 to 26 times as much water as their dry weight, depending on the species. The empty cells help retain water in drier conditions.

Lunularia is a genus of liverworts whose only species is Lunularia cruciata, the crescent-cup liverwort. Lunularia is either the only genus in the order Lunulariales, or may be placed in the order Marchantiales. The name, from Latin luna, moon, refers to the moon-shaped gemma cups.

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Dicranum is a genus of mosses, also called wind-blown mosses or fork mosses. These mosses form in densely packed clumps. In general, upright stems will be single but packed together. Dicranum is distributed globally. In North America these are commonly found in Jack pine or Red pine stands.

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Jaffueliobryum is a genus of moss in family Ptychomitriaceae.

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Pseudoditrichum is a rare North American genus of haplolepideous moss (Dicranidae). It is the only known genus in its family (Pseudoditrichaceae), and there is only one species in the genus. Pseudoditrichum mirabile has been found only in a small area along the Sloan River near Great Bear Lake. This is in the Northwest Territory in northern Canada, only a few kilometers south of the Arctic Circle.

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