1924] 



Collins: Inheritance in Crepis capillaris (L.) TVallr. 



263 



In no case were all the buds of a plant of the bicephalic kind. Some 

 plants indeed produced only a few double buds. Fo bicephalic plants 

 of both types were selfed and F3 cultures produced. The data from 



F3 cultures are shown in table 9. 



TABLE 9 

 Type of Plants Produced by Selfing F- Bicephalic Plants 



* The single + indicates an F2 plant on which but few bicephalic buds appeared. 

 The ++ indicates plants having many such buds. 



It appears that Fo bicephalic plants breed true in Fg. Plant 70 

 which had only a few double buds, was apparently a heterozygote, for 

 it gave a 3 to 1 ratio in F,. The other F, plants listed as normal 

 may have been genetically bicephalic, since they showed some evi- 

 dences of f asciation in the stems and malformation of buds ; but no 

 doubling or cohesion of the buds was found. 



ANTHOCYANIN 



This pigment is distributed to many parts of the plant, but is 

 most noticeable in the midribs of the leaves and on the lower portions 

 of the stems. Culture 19. e8 segregated into 94 plants with antho- 

 cyanin to 39 with none or developed only to a slight degree. The ratio 

 in this case is 2.82 to 1.17, in which the deviation is less than twice 

 the probable error. This segregation can be considered only as sug- 

 gestive because of the difficulty of accurately classifying this character 



