(biology) a taxonomic group containing one or more orders

a division of nonflowering plants characterized by rhizoids rather than true roots and having little or no organized vascular tissue and showing alternation of generations between gamete-bearing forms and spore-bearing forms; comprises true mosses (Bryopsida) and liverworts (Hepaticopsida) and hornworts (Anthoceropsida)

any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses

large order of chiefly tropical liverworts

liverworts with gametophyte differentiated internally

small order sometimes included in the order Jungermanniales

a division of nonflowering plants characterized by rhizoids rather than true roots and having little or no organized vascular tissue and showing alternation of generations between gamete-bearing forms and spore-bearing forms; comprises true mosses (Bryopsida) and liverworts (Hepaticopsida) and hornworts (Anthoceropsida)

any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses

large order of chiefly tropical liverworts

liverworts with gametophyte differentiated internally

small order sometimes included in the order Jungermanniales