The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . e than those in the twoprece<ling branches. They are still typicallyaquatic, and so are seaweeds, but this name isnot as commonly applied to them as to thePhycophytcs. The typical species are greenplants, hut in one group (the red seaweeds) thechlorophyll is hidden by a red or purple color-ing matter. The plant-body is usually composedof an axis, on which arc symmetrically arrangedbranches or leaves. The lower end of the axisis supplied wi
The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . e than those in the twoprece<ling branches. They are still typicallyaquatic, and so are seaweeds, but this name isnot as commonly applied to them as to thePhycophytcs. The typical species are greenplants, hut in one group (the red seaweeds) thechlorophyll is hidden by a red or purple color-ing matter. The plant-body is usually composedof an axis, on which arc symmetrically arrangedbranches or leaves. The lower end of the axisis supplied with root-like organs by which it isattached to the soil or other support, and theplant commonly stands upright. Some speciesshow a wonderful beauty of form and color, andon this accoimt arc greatly prized by amateurbotanists, who collect and preserve them underthe name of sea mosses. All Carpophytes reproduce by two commonmethods. In the first, certain end cells separatefrom special branches, and float away to ger-minate and grow directly into plants like thosefrom which they came. In the second methodof reproduction an egg-organ, much like that of. Fig. 9.— Mucor fusiger; A, young sexual organs; B,after fertilization. Highly magnitied. the Phycophytes, is fertilized by spermatozoidsfrom an antherid which, again, does not differin any essential respect from that of the Phy-cophytes. However, the result of the fertiliza-tion is the formation of a more or less com-pound body which the botanist recognizes as aprimitive kind of fruit. Hence, the aquaticCarpophytes are sometimes known as FruitTangles. In these fruits are spores, and theseon escaping and germinating give rise to newplants. poisoxors FUXGi — :/: :.• li X ^- -r ~ ts ^ — « If f i = S g ? « 3 = c f C C P H
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectencyclo, bookyear1908
