. Plant life, considered with special references to form and function. Plant physiology. 2S6 PLANT LIFE. The most highly developed simjilc ovary (the carpogonium) occurs in the red alg;e, in which it is often differentiated into the ovary proper (which does not always form a distinct egg) and a long Ijranch, the recei.)ti\'e ajiparatus, or trichogvne, to which the sperm adheres and through which its nucleus. Fig. 327. Fig 32S. FrG 329. Fig. 327. —Ovaiy of bladder wrack {Fucus ''csiciilosini). with ^nmu of the hairs. The ovary is raised on a stalk cell; it contains S eggs, of which 6 are shown.
. Plant life, considered with special references to form and function. Plant physiology. 2S6 PLANT LIFE. The most highly developed simjilc ovary (the carpogonium) occurs in the red alg;e, in which it is often differentiated into the ovary proper (which does not always form a distinct egg) and a long Ijranch, the recei.)ti\'e ajiparatus, or trichogvne, to which the sperm adheres and through which its nucleus. Fig. 327. Fig 32S. FrG 329. Fig. 327. —Ovaiy of bladder wrack {Fucus ''csiciilosini). with ^nmu of the hairs. The ovary is raised on a stalk cell; it contains S eggs, of which 6 are shown. Magnified 160 diam. After Thuret. Fic;. 328.—The ovar>' of a red alga {-\>w,t/;'()^; }inilti/Idmn). ..^, in process of ferti- lization. ?to, egg nucleus (a dark cliromoplast lying near) ; j-/. sperm which has ad- hered to the trichogyne t and caused the absorpticjn of the wall there ; n^, t!ie sperm nucleus on the way down the />', a later stage, no and iis about to unite. Magnified about 600 diam.—After Wille. Ftg. 320.—A branch of a red seaweed {/i'(>///,f of'a,-n] bearing cystocaips (the black dots). See hg. 330. Natural size.—After Kiitzing. travels to the o\-ar\- projier (fig. 328). The result of fertiliza- tion is the production, often by a \ery coniplicaled process of g'lowtli, of a spore-]) liodv, the c\'stocarp (figs. 329, 330). The cystocarp is, in ]iart, the liomologue of the sponipl)\te phase of higher plants. h'rom its interior non-. 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, H. Holt & company
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectplantphysiology
