- Bryopsida, class Bryopsida, Musci, class Musci - true mosses: bryophytes having leafy rather than thalloid gametophytes: comprises orders Andreaeales; Bryales; Dicranales; Eubryales; Sphagnales
--1 is a kind of class
--1 is a member of Bryophyta, division Bryophyta
--1 has members:Andreaeales, order Andreaeales; Bryales, order Bryales; Dicranales, order Dicranales; Eubryales, order Eubryales; Sphagnales, order Sphagnales