Bryophytes include three main groups:

* Mosses (Bryophyta): The most familiar and diverse group of bryophytes.

* Liverworts (Marchantiophyta): Named for their often liver-shaped appearance.

* Hornworts (Anthocerotophyta): Distinctive for their horn-shaped sporophytes.

While there are some other nonvascular plants, like the very primitive hornworts, the Bryophytes are by far the most numerous and widespread.