On the 17th of September the
capsules from all the plants were gathered, and the seeds counted. The
crossed plants yielded 243, whilst the same number of self-fertilised
plants yielded only 155 seeds, or as 100 to 64.
Limnanthes douglasii.
Several flowers were crossed and self-fertilised in the usual manner,
but there was no marked difference in the number of seeds which they
yielded. A vast number of spontaneously self-fertilised capsules were
also produced under the net. Seedlings were raised in five pots from the
above seeds, and when the crossed were about 3 inches in height they
showed a slight advantage over the self-fertilised. When double this
height, the sixteen crossed and sixteen self-fertilised plants were
measured to the tips of their leaves; the former averaged 7.3 inches,
and the self-fertilised 6.07 inches in height, or as 100 to 83. In all
the pots, excepting 4, a crossed plant flowered before any one of the
self-fertilised plants. The plants, when fully grown, were again
measured to the summits of their ripe capsules, with the result in Table
5/51.
TABLE 5/51. Limnanthes douglasii.
Heights of plants to the summits of their ripe capsules, measured in inches.
Column 1: Number (Name) of Pot.
Column 2: Crossed Plants.
Column 3: Self-fertilised Plants.
Pot 1 : 17 7/8 : 15 1/8.
Pot 1 : 17 6/8 : 16 4/8.
Pot 1 : 13 : 11.
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