The Origin of Chrysanthemum Segetum Plenum. 171 



mixture, I had to provide more seed because the previous 

 stock had been completely exhausted. I procured it in 

 the same way, by exchange from botanical gardens, and 

 from a similar number of them (about 20). It was not 

 to be expected that the identical form of curve would be 

 obtained again, because the relative height of the two 

 apices obviously depends on the proportion in which the 

 two constituent races are mixed ; and this must be 

 left to chance. I was therefore curious to find out 

 whether the 13-rayed race alone was cultivated in some 

 gardens and the 21 -rayed exclusively in others. With this 

 object I sowed the various samples separately, and on 

 a sufficient space to bring as many specimens to flower 

 as possible. I then recorded the terminal inflorescence 

 of each plant. From no single garden had a pure race 

 been sent, neither of the 13-rayed nor of the 21 -rayed 

 form. In every case both forms were found mixed and 

 in the most diverse proportions. The mixed race was 

 therefore the only one generally cultivated at that time. 

 The variation in the number of ray-florets in the ter- 

 minal inflorescences of the 589 individuals of the whole 

 culture of this mixed race from the botanical gardens in 

 1805 was as follows: 



L. F. 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 



Individuals 7 3 3 5 14 153 77 60 55 31 33 39 41 56 10 1 1 



That is to say, the same apices as in 1892; but in this 

 series the 13-rayed race is obviously more strongly rep- 

 resented than the other. 



With a view to discovering also the character of the 

 race which is sold as Chrysanthemum segetum grandi- 

 florum, I sowed a quantity of its seed. When the plants 

 flowered in July an extraordinary variety of forms was 

 exhibited bv the liq;ulate florets. These were in some 



