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algae

4 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Alga \Al"ga\, noun; pl. {Alg[ae]} or {algae}. [L., seaweed.] (Bot.) A kind of seaweed; pl. the class of cellular cryptogamic plants which includes the black, red, and green seaweeds, as kelp, dulse, sea lettuce, also marine and fresh water conferv[ae], etc. The algae are primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves. [1913 Webster + WordNet 1.5]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

algae \algae\ n. plural of {alga}. [WordNet 1.5]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Cryptogamia \Cryp'to*ga"mi*a\ (kr?p't?-g?"m?-?), noun; pl. {Cryptogami[ae]} (-?). [NL., fr. Gr. krypto's hidden, secret + ga'mos marriage.] (Bot.) The series or division of flowerless plants, or those never having true stamens and pistils, but propagated by spores of various kinds.

Note: The subdivisions have been variously arranged. The following arrangement recognizes four classes: -- I. {{Pteridophyta}, or {Vascular Acrogens}.} These include Ferns, {Equiseta} or Scouring rushes, {Lycopodiace[ae]} or Club mosses, {Selaginelle[ae]}, and several other smaller orders. Here belonged also the extinct coal plants called {Lepidodendron}, {Sigillaria}, and {Calamites}. II. {{Bryophita}, or {Cellular Acrogens}}. These include {Musci}, or Mosses, {Hepatic[ae]}, or Scale mosses and Liverworts, and possibly {Charace[ae]}, the Stoneworts. III. {{Alg[ae]}}, which are divided into {Floride[ae]}, the Red Seaweeds, and the orders {Dictyote[ae]}, {Oospore[ae]}, {Zoospore[ae]}, {Conjugat[ae]}, {Diatomace[ae]}, and {Cryptophyce[ae]}. IV. {{Fungi}}. The molds, mildews, mushrooms, puffballs, etc., which are variously grouped into several subclasses and many orders. The {Lichenes} or Lichens are now considered to be of a mixed nature, each plant partly a Fungus and partly an Alga. Cryptogamic Cryptogamian

From WordNet (r) 3.0 (2006) [wn]:

algae

noun

1: primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves [syn: {alga}, {algae}]


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