52 HETEKOSTYLED DIMORPHIC PLANTS. CHAP. I. 



TABLE 13. 

 Hottonia palustris (from H. Mutter). 



The most remarkable point in this table is the small 

 average number of seeds from the short-styled flowers 

 when illegitimately fertilised, and the unusually large 

 average number of seeds yielded by the illegitimately 

 fertilised long-styled flowers, relatively in both cases to 

 the product of the legitimately fertilised flowers.* The 

 two legitimate unions compared with the two il- 

 legitimate together yield seeds in the ratio of 100 

 to 61. 



H. Miiller also tried the effects of illegitimately fer- 

 tilising the long-styled and short-styled flowers with 

 their own pollen, instead of with that from another 



*H. Miiller says ('Die Be- 

 fruchtung.' &c., p. 352) that the 

 long-styled flowers, when illegiti- 

 mately fertilised, yield as many 

 seeds as when legitimately fer- 

 tilised ; but by adding up the 

 number of seeds from all the cap- 

 sules produced by the two methods 

 of fertilisation, as given by him, 



I arrive at the results shown in 

 Table 13. The average number 

 in the long-styled capsules, when 

 legitimately fertilised, is 91.4, 

 and when illegitimately fertilised, 

 77.5 ; or as 100 to 85. H. Miiller 

 agrees with me that this is the 

 proper manner of viewing the 



