Musci


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Musci: music, Pandora, Music videos

Musci

[′mə‚sī]
(botany)

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

References in periodicals archive ?
Las esporas recientes de los Musci (Bryophyta) de las turberas de Sphagnum de Tierra del Fuego (Argentina).
We expect the expertise and enthusiasm of GTE Entertainment's sales force to be a strong asset to Ocean in this rapidly expanding market," said Musci.
But then the prose dissipates into contradiction and incoherence, as when he complains that "everyone" subverts the singer's accomplishments by concentrating on his "tackier aspects," and three sentences later recognizes as a "cliche of Sinatra biography" that "his musci ultimately excuses his life.
2]) 2 1 2 1 Cover (%) 40 50 30 40 Cover of musci (%) <5 35 <5 15 N.
8 Plagiochilaceae 1 6 6 Radulaceae 1 4 4 Musci (17) 33 54 1.
Additional thanks are due to Michael Johnson for radiotelemetry of cowbirds, and to Todd Musci for establishing plots in 1994.
Frank Musci, a past commander of the American Legion post, has taken part in the annual flag ritual for 60 years.
Shirley Musci, my mom, Priscilla Groves & Paul Mattimore; Paul & Maria$50