422 Origin of Each Species Considered Separately. 



besides 0. lata and O. Laniarckiana two examples of O. 

 albida, (to the right), recognizable by their small narrow 

 leaves, and two of O. oblong a (in the middle) which 

 can hardly be distinguished from the surrounding ex- 

 amples of the parent species in the picture. The major- 

 ity of the /a/a-plants photographed flowered afterwards. 

 The albidas and oblongas grew as far as the rosette 

 stage, but died in the course of the summer. The La- 

 marckianas were not planted out. 



The O. subovata (the second from the left in the 

 top row) was noticeable very soon after transplanting 

 by the fact that it remained very small whilst the other 

 plants grew vigorously. Its leaves were almost orbicular 

 and were shortly petiolate. It was planted out at the 

 end of April in a separate bed with the other mutants, 

 and grew up to a strong full rosette with numerous ovate 

 leaves with long petioles which distinguished it at once 

 from all the other plants in the same bed. It died in the 

 autumn. 



The two other examples of 0. subovata (mentioned 

 on page 285) died in the latter part of the summer 

 after they had formed thick rosettes similar to those al- 

 ready described (see also Fig. 48 on page 280). 



I had, before this, observed one or two instances of 

 rosettes with the same form of leaf and of the same 

 general appearance. For example in 1895 I observed 

 seven of them amongst 14,000 seedlings of the main 

 trunk of the Lainarckiana-isLmily, that is to say 1 per 

 2000 (p. 224). They survived the autumn, but not the 

 winter. Then there were the three mutants (mentioned 

 on page 401) which arose in 1898, from the seeds of O. 

 snblinearis and two others which arose from 0. scintil- 



