Column 3: Number of Fruits produced.
Column 4: Average Number of Seeds per Fruit.
Long-styled by pollen of short-styled. Legitimate union :
18 : 9 : 2.11.
Long-styled by own-form pollen. Illegitimate union :
18 : 0 : 0.
Short-styled by pollen of long-styled. Legitimate union:
18 : 15 : 2.60.
Short-styled by own-form pollen. Illegitimate union :
12 : 7 : 1.86.
The long-styled and short-styled flowers of P. angustifolia differ from one
another in structure in nearly the same manner as those of P. officinalis. But
in Figure 3.6 a slight bulging of the corolla in the long-styled form, where the
anthers are seated, has been overlooked. My son William, who examined a large
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,
according 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-styled from 115 to 112. From an average of seven
measurements of each form the distance between these organs in the long-styled
is to the same distance in the short-styled form as 100 to 69; so that the
stigma in the one form does not stand on a level with the anthers in the other.
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