CHAP. V. HETEROSTYLED TRIMORPHIC PLANTS. 195 



the plants, as already stated, were not nearly so dwarfed 

 or so sterile as in the first lot. All produced plenty of 

 capsules. I counted the number of seeds in only three 

 plants, viz. Nos. 8, 9, and 10. 



Plant 8. This plant was allowed to be freely fertilised 

 in 1864 by legitimate and illegitimate plants of the other 

 two forms, and ten capsules yielded on an average 41.1 

 seeds, with a maximum of 73 and a minimum of 11. Hence 

 this plant produced only 44 per cent, of the full comple- 

 ment of seeds. 



Plant 9, This long-styled plant was allowed in 1865 to 

 be freely fertilised by illegitimate plants of the other two 

 forms, most of which were moderately fertile. Fifteen 

 capsules yielded on an average 57.1 seeds, with a maximum 

 of 86 and a minimum of 23. Hence the plant yielded 68 

 per cent, of the full complement of seeds. 



Plant 10. This long-styled plant was freely fertilised 

 at the same time and in the same manner as the last. Ten 

 capsules yielded an average of 44.2 seeds, with a maximum 

 of 69 and a minimum of 25. Hence this plant yielded 47 

 per cent, of the full complement of seeds. 



The nineteen long-styled plants of the third lot, of 

 the same parentage as the last lot, were treated dif- 

 ferently; for they flowered during 1867 by themselves, 

 so that they must have been illegitimately fertilised 

 by one another. It has already been stated that a 

 legitimate long-styled plant, growing by itself and 

 visited by insects, yielded an average of 21.5 seeds 

 per capsule, with a maximum of 35; but, to judge 

 fairly of its fertility, it ought to have been observed 

 during successive seasons. We may also infer from 

 analogy that, if several legitimate long-styled plants 

 were to fertilise one another, the average number of 

 seeds would be increased; but how much increased I 

 do not know; hence I have no perfectly fair standard 

 of comparison by which to judge of the fertility of the 



