. Outlines of plant life : with special reference to form and function . Botany. Fig. 46 —A, two capsules of Bryiim ; from the right-hand one the Hd has fallen, show- ing the teeth. Magnified 5 diam. B, four gametophyte shoots of Splachnutit am- jiuUaceufJt^ bearing four sporophytes. Natural size. C, a capsule of one of the same sporophytes, showing enlarged apophysis, a, below the spore case, s. Mag- nified 10 diam. ZJ, capsule of Sfilachnum iuteum, with umbrella-like apophysis, a, below spore case, s. Magnified 2 diam. required to supply each spore. The foot, being in close contact with the
. Outlines of plant life : with special reference to form and function . Botany. Fig. 46 —A, two capsules of Bryiim ; from the right-hand one the Hd has fallen, show- ing the teeth. Magnified 5 diam. B, four gametophyte shoots of Splachnutit am- jiuUaceufJt^ bearing four sporophytes. Natural size. C, a capsule of one of the same sporophytes, showing enlarged apophysis, a, below the spore case, s. Mag- nified 10 diam. ZJ, capsule of Sfilachnum iuteum, with umbrella-like apophysis, a, below spore case, s. Magnified 2 diam. required to supply each spore. The foot, being in close contact with the tissue of the gameto- phyte, acts as an absorbing organ, receiving food solutions from it. The sporophyte thus lives, in part at least, as a parasite upon the gametophyte. In some mosses there is a tendency to increase the nutritive work of the sporophyte by developing at the top of the stalk, below the spore case, a mass of green tissue. In Bryum [A, fig. 46) this gives the capsule a pear- shape, while in Splachnum (B, C, D, fig. 46) it is so far developed as to ex- ceed the spore case. In some species it is expanded into a miniature um- brella which, one can imagine, might readily become divided into leaves. The intimate attachment of '°««r;^J™°fa»?.°™^c?lumdS^;'y-^ sporophyte to gametophyte con- foot, embedded in gametophyte .stem; .._ ., 1 J *. ii, ^'c r ii s, seta (cells not Ihown); Ifs, spore tlHUeS thrOUghoUt the life of the Sfie<i8o'diam°-ATerKien1tztGeriol! former. Sometimes the gameto-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Barnes, Charles Reid, 1858-1910. New York : Henry Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
