CHAP. V. HETEROSTYLED TRIMORPHIC PLANTS. 191 



and naturally fertilised by other illegitimate plants, 

 contained on an average 44.2 seeds; whereas the 

 capsules on legitimate long-styled plants, legitimately 

 and naturally fertilised by other legitimate plants, con- 

 tained on an average 93 seeds. Therefore this illegiti- 

 mate plant yielded only 47 per cent, of the full and nor- 

 mal complement of seeds. 



Standard Number of Seeds produced by Legitimate 

 Plants of the three Forms, when legitimately fer- 

 tilised. 



Long-styled form: average number of seeds in each 

 capsule, 93; maximum number observed out of twenty- 

 three capsules, 159. 



Mid-styled form: average number of seeds, 130; 

 maximum number observed out of thirty-one capsules, 

 151. 



Short-styled form: average number of seeds, 83.5; 

 but we may, for the sake of brevity, say 83 ; maximum 

 number observed out of twenty-five capsules, 112. 



CLASSES I. and II. Illegitimate Plants raised from 

 Long-styled Parents fertilised with pollen from the 

 mid-length or the shortest stamens of other plants of 

 the same form. 



From this union I raised at different times three 

 lots of illegitimate seedlings, amounting altogether to 

 56 plants. I must premise that, from not foreseeing 

 the result, I did not keep a memorandum whether the 

 eight plants of the first lot were the product of the 

 mid-length or shortest stamens of the same form; but 

 I have good reason to believe that they were the pro- 

 duct of the latter. These eight plants were much more 

 dwarfed, and much more sterile than those in the other 



