. Beginners' botany. Botany. 148 BEGINNERS' BOTANY. Fig. 200, Larkspur, irregular and provided with nectar and strong pcrficme are iisually pollinated by insects. Gaudy colors probably attract insects in many cases, but perfume appears to be a greater attraction. The insect visits the flower for the nectar (for the making of honey) and may tuiknozvingly carry the pollen. Spurs and sacs in the flower are necta- ries (Fig. 200), but in spurless flowers the nectar is usually secreted in the bottom of the flower cnp. This compels the insect to pass by the anther and Flower of rub against the polle
. Beginners' botany. Botany. 148 BEGINNERS' BOTANY. Fig. 200, Larkspur, irregular and provided with nectar and strong pcrficme are iisually pollinated by insects. Gaudy colors probably attract insects in many cases, but perfume appears to be a greater attraction. The insect visits the flower for the nectar (for the making of honey) and may tuiknozvingly carry the pollen. Spurs and sacs in the flower are necta- ries (Fig. 200), but in spurless flowers the nectar is usually secreted in the bottom of the flower cnp. This compels the insect to pass by the anther and Flower of rub against the pollen before it reaches the nectar. Sometimes the anther is a long lever poised on the middle point and the insect bumps against one end and lifts ,-» it, thus bringing the other end 1 of the lever with the pollen sacs jj. ] down on its back. Flowers that are pollinated by insects are said to be entomophilous (" insect lov- ing"). Fig. 200 shows a larkspur. The envelopes are separated in Fig. 201. The long spur at once suggests insect pollination. The spur is a sepal. Two hollow petals project into this spur, ap- parently serving to guide the bee's tongue. The two smaller petals, in front, are peculiarly colored and perhaps serve the bee in locating the nectary. The stamens ensheath the pistils (Fig. 202). As the insect stands on the flower and thrusts its head into the center,. 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York, The Macmillan company
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
