Bryophyta: Systematics

Higher-level classification of the mosses is still not fully settled, and there is still considerable difference of opinion on the names of the major groups. The cladogram above shows the relationships of the four major groups: Sphagnopsida (peat mosses), Andreaeopsida (lantern mosses), Polytrichopsida (nematodontous mosses), and the Bryopsida (arthrodontous mosses), which includes the diplolepidious and haplolepidious groups.