The same plants were again measured in the autumn of the following year, 1870.
TABLE 5/60. Pot 2.—Sarothamnus scoparius.
Heights of plants measured in inches.
Column 1: Crossed Plants.
Column 2: Self-fertilised Plants.
: 26 2/8 : 14 2/8.
: 16 4/8 : 11 4/8.
: 14 : 9 6/8.
Total : 56.75 : 35.50.
The three crossed plants now averaged 18.91, and the three self-fertilised 11.83 inches in height; or as 100 to 63. The three crossed plants in Pot 1, as already shown, had beaten the three self-fertilised plants so completely, that any comparison between them was superfluous.
The winter of 1870-1871 was severe. In the spring the three crossed plants in Pot 2 had not even the tips of their shoots in the least injured, whereas all three self-fertilised plants were killed half-way down to the ground; and this shows how much more tender they were. In consequence not one of these latter plants bore a single flower during the ensuing summer of 1871, whilst all three crossed plants flowered.
Ononis minutissima.