. Practical botany. Botany. Fii:.105. Types of pollen grains A, dandelion; B, hemp; C, gentian; 1), squash. All greatly magnified. After Kerner Fig. 106. Types of pollen grains A, evening primrose, the grains united by sticky threads; B, marsh mallow. Greatly magnified. After Kerner its lodging place in the higher seed plants is on the stigma. This generally has a rough, often moist and sticky surface. 107. The pollen grain and its germination.^ Pollen grains are of many forms, a few of which are shown in Figs. 105 and 106. 1 The logical order of treatment would be to say all that is to be sai
. Practical botany. Botany. Fii:.105. Types of pollen grains A, dandelion; B, hemp; C, gentian; 1), squash. All greatly magnified. After Kerner Fig. 106. Types of pollen grains A, evening primrose, the grains united by sticky threads; B, marsh mallow. Greatly magnified. After Kerner its lodging place in the higher seed plants is on the stigma. This generally has a rough, often moist and sticky surface. 107. The pollen grain and its germination.^ Pollen grains are of many forms, a few of which are shown in Figs. 105 and 106. 1 The logical order of treatment would be to say all that is to be said about pollination before dealing "with its result, fertilization. It is, however, more convenient to discuss the minute structure of pollen and the pistil soon after Chapter VII is completed, and then to give details of some of the modes by which pollination is secured. 115. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917; Caldwell, Otis William, 1869- joint author. Boston, New York [etc. ] Ginn and company
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