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moss animal

(Encyclopedia) moss animal, common name applied to members of the phylum Ectoprocta.

ground pine

(Encyclopedia) ground pine, common name for several creeping plants, particularly species of club moss.

liverwort

(Encyclopedia) liverwort, any plant of the class Marchantiopsida. Mosses and liverworts together comprise the division Bryophyta, primitive green land plants (see moss; plant); some of the earliest…

resurrection plant

(Encyclopedia) resurrection plant, name for several plants, usually of arid regions, that may apparently be brought back to life after they are dead. In reality they have hygroscopic qualities which…

Irish moss

(Encyclopedia) Irish moss: see seaweed; Rhodophyta.

agate

(Encyclopedia) agateagateăgˈĭt [key], translucent, cryptocrystalline variety of quartz and a subvariety of chalcedony. Agates are identical in chemical structure to jasper, flint, chert, petrified…

Hedwig, Johann

(Encyclopedia) Hedwig, JohannHedwig, Johannyōˈhän hātˈvĭkh [key], 1730–99, German botanist, b. Transylvania. He was an authority on the lower plants, especially mosses, and was professor at the Univ…

mulch

(Encyclopedia) mulch, any material, usually organic, that is spread on the ground to protect the soil and the roots of plants from the effects of soil crusting, erosion, or freezing; it is also used…

Hart, Moss

(Encyclopedia) Hart, Moss, 1904–61, American dramatist, b. New York City, studied at Columbia. His first important play, Once in a Lifetime (1930), marked the beginning of a long collaboration with…

club moss

(Encyclopedia) club moss, name generally used for the living species of the class Lycopodiopsida, a primitive subdivision of vascular plants. The Lycopodiopsida were a dominant plant group in the…