. The different forms of flowers on plants of the same species. Plants; Fertilization of plants. Chap. III. PULMONARIA ANGTISTTFOLIA. 105 conformity with other important functional differences between them, immediately to be described. The long-styled and short-styled ilowers of P. angus- tifolia differ from one another in structure in nearly the same manner as those of P. officinalis. But in the accompanying figure a slight bulging of the corolla Fig. Long-styled form. Short-styled form. PULMONARIA ANGUSTirOLIA. in the long-styled form, where the anthers are seated, has been overlooked. M
. The different forms of flowers on plants of the same species. Plants; Fertilization of plants. Chap. III. PULMONARIA ANGTISTTFOLIA. 105 conformity with other important functional differences between them, immediately to be described. The long-styled and short-styled ilowers of P. angus- tifolia differ from one another in structure in nearly the same manner as those of P. officinalis. But in the accompanying figure a slight bulging of the corolla Fig. Long-styled form. Short-styled form. PULMONARIA ANGUSTirOLIA. in the long-styled form, where the anthers are seated, has been overlooked. My son William, who examined a lai'ge number of wild plants in the Isle of Wight, observed that the corolla, though variable in size, was generally larger in the long-styled flowers than in the short-styled; and certainly the largest corollas of all were found on the long-styled plants, and the smallest on the short-styled. Exactly the reverse occurs, ac- cording to Hildebrand, with P. officinalis. Both the pistils and stamens of P. angustifolia vary much in length ; so that in the short-styled form the distance between the stigma and the anthers varied from 119 to 65 divisions of the micrometer, and in the long- gtyled from 115 to 112. From an average of seven. 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 Darwin, Charles, 1809-1882. New York, D. Appleton
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1896
