. Plant life, considered with special references to form and function. Plant physiology. Fig. 257. Fig. 258. Fig. 257. —a median longitudinal section through the flower of liJieiiut undulatutn. s, a sepal; /, a petal; n, a, <i, anthers; «, stigma; y^ ovulary; i^, sporangium, which, with the two integuments over it, forms the single ovule terminating the axis ; ffr, nectary. Magnified about lo diam.— After Sachs. !• IG. 25S.—Pimpernel lA n"i,^iiUis arvensis\. A, median longitudinal section of a young flower-bud ; /, sepal ; c, corolla, just beginning to develop ; (panther; A", car-
. Plant life, considered with special references to form and function. Plant physiology. Fig. 257. Fig. 258. Fig. 257. —a median longitudinal section through the flower of liJieiiut undulatutn. s, a sepal; /, a petal; n, a, <i, anthers; «, stigma; y^ ovulary; i^, sporangium, which, with the two integuments over it, forms the single ovule terminating the axis ; ffr, nectary. Magnified about lo diam.— After Sachs. !• IG. 25S.—Pimpernel lA n"i,^iiUis arvensis\. A, median longitudinal section of a young flower-bud ; /, sepal ; c, corolla, just beginning to develop ; (panther; A", car- pels growing over .S^ the apex of the axis. B, median longitudinal section of the pistil, c, the carpels, forming a roof over .S", the axis on which ovules are beginning to develop, and growing up to form a columnar style at whose apex is the stigma, 77. C, the same, older, .s', the enlarged apex of the axis showing six ovules, .S'A', in sec- tion ; iTf-, the style ; 77, the stigma, on which are lodged pollen grains, /. All magni- fied.—After Sachs. 344. Stamens.—A stamen is a leaf (s]3orophyll) of the seed plants which bears the microsporangia, or polleir sacs. The flowers whose essential organs are all stamens are said to. 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
