. Elementary botany. Botany. 354 ECOLOG y. the pollenation of the pistil of one flower by pollen from another, is sure to take place, if it is pollenated at all. Even in monoecious plants cross pollenation often takes place between flowers of different individuals, so that. Fig. 451. Viola cucullata; blue flowers above, cleistogamous flowers smaller and curved below. Section of pistil atright. more widely different stocks are united in the fertilized egg, and the strain is kept more vigorous than if very close or identical strains were united. 652. But there are many flowers in which both
. Elementary botany. Botany. 354 ECOLOG y. the pollenation of the pistil of one flower by pollen from another, is sure to take place, if it is pollenated at all. Even in monoecious plants cross pollenation often takes place between flowers of different individuals, so that. Fig. 451. Viola cucullata; blue flowers above, cleistogamous flowers smaller and curved below. Section of pistil atright. more widely different stocks are united in the fertilized egg, and the strain is kept more vigorous than if very close or identical strains were united. 652. But there are many flowers in which both stamens and pistils are pres- ent, and yet in which cross pollenation is accomplished through the agency of insects. 653. Pollenation of the hluet.—In the pretty bluet the -stamens and styles of the flowers are of different length as shown in figures 452, 453. The stamens of the long-styled flower are at about the same level as the stigma of the short-styled flower, while the stamens of the latter are on. 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 Atkinson, George Francis, 1854-1918. New York, H. Holt
Size: 1330px × 1878px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisher, booksubjectbotany
