Bryopsida

from WordNet (r) 3.0 (2006)

Bryopsida
    n 1: true mosses: bryophytes having leafy rather than thalloid
         gametophytes: comprises orders Andreaeales; Bryales;
         Dicranales; Eubryales; Sphagnales [syn: {Bryopsida}, {class
         Bryopsida}, {Musci}, {class Musci}]

from The Collaborative International Dictionary of English v.0.48

Bryopsida \Bryopsida\ n.
   the class of plants comprising the true mosses, having leafy
   rather than thalloid gametophytes; it comprises the orders
   {Andreaeales}; {Bryales}; {Dicranales}; {Eubryales}; and
   {Sphagnales}.

   Syn: class Bryopsida, Musci, class Musci.
        [WordNet 1.5]