[99]

Phalaris apogeotropism Right-Hand seedling Sept 19th

(Fig. 217)

Horizontal glass

[99]

(1/5 scale 4 sets of Lettering Blue lines)

[99v]

91

Ipomoea

of Hero have not only acquired inherited from Hero a powers of growth equal to that of the ordinary intercrossed plants, but have become more fertile when self-fertilised than is usual with the plants of our the present species. The flowers on the self-fertilised grandchildren of Hero in Table 16 (the eighth generation of self-fertilised plants) were fertilised with their own pollen and produced plenty of seeds capsules, ten of which (though this is too few a number for a safe average) contained 5.2 seeds per pod capsule,—a higher average than has ever occurred before after in any other case with the self-fertilised plants. The anthers produced by these self-fertilised grandchildren were also as well developed and contained as much pollen as those on in the intercrossed plants of the same corresponding generation; whereas we have seen that this is was not the case with the ordinary self-fertilised plants of the later generations. But Nevertheless some few of the flowers produced by the grandchildren of Hero were slightly monstrous, like those of the ordinary self-fertilised plants of the corresponding later generations. In order not to recur to the subject of