BY THE SELECTION OF SOMATIC VARIATIONS. 



33 



upon which a sectorial variation in one small branch gave the pattern 

 green. 



With respect to the red epidermis, patterns green-yellow-solid red 

 (fig. 8) and green-solid red are identical, and it is noteworthy that in the 

 62 plants of these two patterns which were grown to maturity there 

 were no noticeable fluctuations and but 4 cases of bud variations involv- 

 ing the red. For the red epidermis the ratio of frequency of bud varia- 

 tions was 1 to 3,100. 



TABLE 8. Summary of plants with solid red patterns, done 3. 



Plants with pattern green-yellow-solid red upper center. This bright 

 and attractive pattern (fig. 10) first developed as a sectorial bud vari- 

 ation in the winter of 1912 on a plant otherwise uniform and constant 

 to type green-yellow-solid red. During the summer of 1913, the plant 

 grew vigorously and numerous branches developed from the part hav- 

 ing this new pattern, all of which were constant and uniform for the 

 new type and which were in conspicuous contrast to the rest of the plant. 



In the autumn of 1913 cuttings were made from these branches for 

 5 plants, which were grown until the autumn of 1914. Four of these 

 remained quite constant, although they were much greener in winter. 

 One plant became gradually greener during the early part of winter 

 until it was apparently pure green, giving type green-solid red upper 

 center. The upper surface of a leaf of this plant painted in January 

 is shown in figure 15. Toward spring the new leaves produced by this 

 plant became quite laciniate, but during the following summer the 

 leaves produced were entire and strongly tinged with yellow. During 

 the summer of 1914, two plants from cuttings of one of the plants 

 constant for the type remained true to that pattern. 



No bud variations appeared in any of the 7 plants and no noticeable 

 fluctuations in the amount and distribution of the red ; yet there was 

 no plant that did not show at some time a few leaves with tiny red spots 

 scattered on the lower surface, much as is shown in figure 10a. 



This pattern also appeared late in the summer of 1914 as a sectorial 

 variation on a plant which during the summer had been constant and 

 uniform for type green-yellow-solid red. A cutting was made from this 



