- liverwort - any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses
--1 is a kind of bryophyte, nonvascular plant
--1 is a member of
--1 has particulars:Hepaticopsida, class Hepaticopsida, Hepaticae, class Hepaticae hornwort; leafy liverwort, scale moss; hepatica, Marchantia polymorpha