. Plant life, considered with special references to form and function. Plant physiology. V EG ETA TIVE REP ROD UCJTON. 239 ner) face (fig. 246). In such cases the carpels are generally aggregated in close spirals near tlie end of a thickish axis, and finall}' ripen into a cone (figs. 341, 35S), \\'hich gi\es the name to one of the largest orders of gymnospernis, the. Fig. 247.—A, slioot of the yew I Initraia) with three ripe seeds, each surrounded by a rlesliy aril. Natural size. /.'. o\iile witli its tip projecting from the scale leaves of the shoot it terminates. C, the same, hahej,
. Plant life, considered with special references to form and function. Plant physiology. V EG ETA TIVE REP ROD UCJTON. 239 ner) face (fig. 246). In such cases the carpels are generally aggregated in close spirals near tlie end of a thickish axis, and finall}' ripen into a cone (figs. 341, 35S), \\'hich gi\es the name to one of the largest orders of gymnospernis, the. Fig. 247.—A, slioot of the yew I Initraia) with three ripe seeds, each surrounded by a rlesliy aril. Natural size. /.'. o\iile witli its tip projecting from the scale leaves of the shoot it terminates. C, the same, hahej, showing the body of ovule (sporan- gium) and the long tube-like integument. 7', young seed of same, with aril partly formed. E, mature seed, fialved. The central (white) body is the embryo ; around it (dotted) the food ; then the seed coat; tlien tlie aril (white). B, C, 1>, /{, slightly magnified.—After Kerner. Coniferce. (See further ^ 404. ) The ovules of some gym- nospernis are not borne by cai'pels, but each terminates an axis, as in the yew (fig. 247). 335. The closed pistils of angiosperms are usually distin-. 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
Size: 1416px × 1764px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectplantphysiology
