Bryopsida

n.

1.

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

Thesaurus

Noun

1.

Bryopsida - true mosses: bryophytes having leafy rather than thalloid gametophytes: comprises orders Andreaeales; Bryales; Dicranales; Eubryales; Sphagnales class Bryopsida, class Musci, Musci class - (biology) a taxonomic group containing one or more orders Bryophyta, division Bryophyta - 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) Andreaeales, order Andreaeales - comprises a single genus: Andreaea Bryales, order Bryales - category used in some classification systems for mosses having the spore case separated from the capsule wall by a hollow intercellular space Dicranales, order Dicranales - widely distributed order of mosses with erect gametophores and sporophytes at the tips of stems Eubryales, order Eubryales - mosses with perennial erect gametophores and stems with rows of leaves and drooping capsules order Sphagnales, Sphagnales - coextensive with the genus Sphagnum; in some classifications isolated in a separate subclass