Musci

Thesaurus

Noun

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

Musci

[′mə‚sī] (botany) Bryopsida

Musci

(also Bryatae), a class of spore-producing plants, or mosses, of the division Bryophyta. In contrast with other mosses, these are divided into a stem and leaves. The Musci comprise three subclasses—Sphagnidae, Andreaeidae, and Bryidae. They are annuals or, more frequently, perennials. Their development begins from spores from which germinates a lamelliform or, more often, branched, threadlike protonema with buds. The buds develop into green stems, which measure between a few millimeters and 0.5 m long; they have rhizoids and spirally arranged leaves. At the tip of the stem or on the lateral shoots there are female and male sex organs—the archegonia and antheridia. Fertilization occurs in the egg cell in the archegonium. The zygote develops into a sporophyte in the form of a sporogonium, consisting of a capsule with a spore case and, frequently, a mouth. The Musci also reproduce vegetatively.

Mosses of the class Musci are found on mountains and plains throughout the world, primarily in the tundra, forests, marshes, and the alpine mountain belt. Of the approximately 15,000 known species, more than 1,500 grow in the USSR. The most common mosses in forests are Polytrichum, Dicranum, and Mnium; in marshes, Sphagnum; in water, Fontinalis; and on rocky cliffs, Andreaea and Grimmia.

I. I. ABRAMOV

Musci

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noun

Synonyms for Musci

noun true mosses: bryophytes having leafy rather than thalloid gametophytes: comprises orders Andreaeales

Synonyms

Bryopsida
class Bryopsida
class Musci

Related Words

class
Bryophyta
division Bryophyta
Andreaeales
order Andreaeales
Bryales
order Bryales
Dicranales
order Dicranales
Eubryales
order Eubryales
order Sphagnales
Sphagnales

Musci

Musci

Musci

Musci

Musci

Mus·ci

Musci

Synonyms for Musci

noun true mosses: bryophytes having leafy rather than thalloid gametophytes: comprises orders Andreaeales

Synonyms

Related Words