Chap. V. HETEROSTYLED TKIMOKPHIO PLANTS. 197 



the same year, yielded an average, from fifteen capsules, of 27 

 seeds, with a maximnm of 49 and a minimum of 7. But two 

 poor capsules may be rejected, and then the average rises to 

 32 '6, with the same maximum of 49 and a minimum of 20; so 

 that this plant attained 38 per cent, of the normal standard of 

 fertility, and was rather more fertile than the last, yet- many of 

 the anthers were contabescent. 



Plant 16. This short-styled plant, treated like the two last, 

 yielded from ten capsules an average of 77 "8 seeds, with a 

 maximum of 97 and a minimum of 60; so that this plant 

 produced 94 per cent, of the fuU number of seeds. 



Plant 17. This, the one long -styled plant of the same parent- 

 age as the last three plants, when freely and legitimately ferti- 

 lised in the same manner as the last, yielded an average from 

 ten capsules of 76 '3 rather poor seeds, with a maximum of 88 

 and a minimum of 57. Hence this plant produced 82 per cent, 

 of the proper number of seeds. Twelve flowers enclosed in a 

 net were artificially and legitimately fertilised with pollen from 

 a legitimate short-styled plant ; and nine capsules yielded an 

 average of 82-5 seeds, with a maximum of 98 and a minimum 

 of 51; so that its fertility was increased by the action of 

 pollen from a legitimate plant, but still did not reach the normal 

 standard. 



Class IV. Illegitimate Plants raised from a Mid-styled 

 Parent fertilised with pollen from own-form longest 

 stamens. 



After two trials, I succeeded in raising only four 

 plants from this illegitimate union. These proved to 

 be three mid-styled and one long-styled ; but from so 

 small a number we can hardly judge of the tendency 

 in mid-styled plants when self-fertilised to reproduce 

 the same form. These four plants never attained their 

 full and normal height; the long-styled plant had 

 several of its anthers contabescent. 



Plant 18. This mid-styled plant, when freely and legitimately 

 fertilised during 1865 by illegitimate plants descended from 

 self-fertilised long-, short-, and mid-styled plants, yielded an 

 average from ten capsules of 102 "6 seeds, with a maximum of 



