. Nature-study; a manual for teachers and students. Nature study. 328 NATURE-STUDY catkins of pines, or the drooping staminate flower clusters of the boxelder or hard maple. If they are not quite ripe place them in water for a few days. Then the anthers will be open and the slightest jarring of the branches will shake out great clouds of fine, yellow pollen which floats upon the air. Make a study in a general way of these plants, noting. Fig. 127. Development of Sweet Pea Flower into Fruit. the way pollination is brought about. As a rule these flow- ers are not pretty, yet very interesting on
. Nature-study; a manual for teachers and students. Nature study. 328 NATURE-STUDY catkins of pines, or the drooping staminate flower clusters of the boxelder or hard maple. If they are not quite ripe place them in water for a few days. Then the anthers will be open and the slightest jarring of the branches will shake out great clouds of fine, yellow pollen which floats upon the air. Make a study in a general way of these plants, noting. Fig. 127. Development of Sweet Pea Flower into Fruit. the way pollination is brought about. As a rule these flow- ers are not pretty, yet very interesting on close examination. The study of the details of structure of these flowers may be de- ferred to higher grades. But here the fact should be rec- ognized that these pecuhar flower clusters produce an abun- dance of very light and dry pollen which the wind can shake out and carry away. Note also the large and often hairy stigmas of the pistil, and see how well they are adapted for catching the pollen as it drifts 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 Holtz, Frederick Leopold, 1870-. New York, C. Scribner's Sons
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