But by the time that they had thrown up young
flower-stems, the legitimately crossed plants revealed much the finest,
and had greener and larger leaves. The breadth of the largest leaf on
each plant was measured, and those on the crossed plants were on an
average a quarter of an inch (exactly .28 of an inch) broader than those
on the self-fertilised plants. The plants, from being too much crowded,
produced poor and short flower-stems. The two finest on each side were
measured; the eight on the legitimately crossed plants averaged 4.08,
and the eight on the illegitimately self-fertilised plants averaged 2.93
inches in height; or as 100 to 72.
These plants after they had flowered were turned out of their pots, and
planted in fairly good soil in the open ground. In the following year
(1870), when in full flower, the two tallest flower-stems on each side
were again measured, as shown in Table 6/93, which likewise gives the
number of flower-stems produced on both sides of all the pots.
TABLE 6/93. Primula veris.
Heights of plants measured in inches.
Column 1: Number (Name) of Pot.
Column 2: Height: Legitimately crossed Plants.
Column 3: Number of Flower-stems produced: Legitimately crossed Plants.
Column 4: Height: Illegitimately crossed Plants.
Column 5: Number of Flower-stems produced: Illegitimately crossed
Plants.
Pot 1 : 9 : 16 : 2 1/8 : 3.
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