Identifier: flowerbeeplant00love (find matches)
Title: The flower and the bee; plant life and pollination
Year: 1918 (1910s)
Authors: Lovell, John Harvey, 1860-1939
Subjects: Fertilization of plants
Publisher: New York, C. Scribner's sons
Contributing Library: The LuEsther T Mertz Library, the New York Botanical Garden
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

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Text Appearing Before Image:
Fig. 95. Red Poppy. Papaver Rhoeas A pollen-flower nisms, previously acquired, very useful. In the flowers of thetick-trefoil (Desmodium), which are pollinated by bumblebees,the stamens are held under tension and shed their pollen whileenclosed in the keel. When a bumblebee aHghts on the wings,the anthers are released and the elastic filaments project thepollen up in the air, as though there had been a slight explosion. 198 POLLEN-FLOWERS
Text Appearing After Image:
Fig. 96. Purple Poppy. Papaver somnijerum A pollen-flower There is provision for only a single visit, since the entire stockof pollen is exhausted at once. Male bumblebees, which haveno occasion to collect pollen, do not visit these flowers. Theflowers of the lupine (Lupinus), another genus of the pulsefamily, are also nectarless. Here the pollen is expelled by apiston mechanism. The five outer stamens, after discharg- 199 THE FLOWER AND THE BEE ing their pollen inside the keel, wither up; while the five innerstamens act as a piston and push out the pollen during aninsect visit. The blue lupine (Lupinus subcarnosus), the Stateflower of Texas, which carpets large areas of land with its hand-some blue flowers, is visited by a great company of honey-bees for pollen. In some pollen-flowers there is a curious division of laboramong the stamens, as in Cassia and Heeria. A part of theanthers, called nutritive anthers, are designed to furnish foodto the visitors and are a conspicuous bright y

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