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ACOTYLEDONES , the name given by See also:Antoine See also:Laurent de See also:Jussieu in 1789 to the lowest class in his Natural See also:System of See also:Botany, embracing flowerless See also:plants, such as ferns, lycopods, See also:horse-tails, mosses, liverworts, See also:sea-weeds, See also:lichens and See also:fungi . The name is derived from the See also:absence of a See also:seed-See also:leaf or cotyledon . Flowering plants See also:bear a seed containing an embryo, with usually one or two cotyledons, or seed-leaves; while in flowerless plants there is no seed and therefore no true cotyledon . The See also:term is synonymous with Cryptogams, by which it was replaced in later systems of See also:classification . |
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