. Botany of the living plant. Botany; Plants. APPENDIX A 631 Pollination. The flowers arc protandrous, the inner series of stamens ripening first ; then the outer. Nectar is secreted at the upper surface of the ovary. The flowers are visited by flies and small bees, and repeated visits will give a high probability of cross-pollination. But the flower is not highly specialised, and self-pollination is possible. The London Pride (Saxifraga umbrosa, L.) will serve as an alternative example, though the flowers are smaller and more numerous, and the carpels are not so deeply sunk. It is pollinated
. Botany of the living plant. Botany; Plants. APPENDIX A 631 Pollination. The flowers arc protandrous, the inner series of stamens ripening first ; then the outer. Nectar is secreted at the upper surface of the ovary. The flowers are visited by flies and small bees, and repeated visits will give a high probability of cross-pollination. But the flower is not highly specialised, and self-pollination is possible. The London Pride (Saxifraga umbrosa, L.) will serve as an alternative example, though the flowers are smaller and more numerous, and the carpels are not so deeply sunk. It is pollinated by small flies. (25) The Red-Flowering Currant (Ribes sanguineum, Pursh) is native in North America, and is commonly grown in gardens. It serves as an example of the Ribesiaceae, which are usually grouped with the Saxifragaceae, notwithstand- ing their inferior ovary, and five stamens. The Gooseberry or Currant of gardens would serve equally Fig. 480. Median section of the flower of Saxifrage, showing the carpels half sunk in the recep tacle, and coherent for the greater part of their length. (After Figuier.). 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 Bower, F. O. (Frederick Orpen), 1855-1948; Wardlaw, C. W. (Claude Wilson), 1901-. London, Macmillan and Co. , ltd.
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