B. MiYAZAWA 65 



that leaves of triH»8 in the Kiwt Indios, Ctylon and .lava n(i(hn <luriu>( 

 the dry period in the same way as autuiniial leaves do in the tein|x'nite 

 regions. Again Pellew' n.»|X)rU that the amount of pigment in |M'tals 

 of Inith whiU* and blue plaiitw of Camfxttnila carpatkit varies aceonling 

 to the moisture condition of the soil, tlowi-rs hecoming much darker 

 after rain. 



In our Ciise it would not therefore be unlikely that owing to the 

 summer drought some anthocyanin would devel(»p in the " hukurin " 

 part and make whito-margine<l tiowei-s look like fully-colouriHl ones, 

 especially in plants grown in pots. 



3. Flower-colour, 



As will be seen from Table I there occur no dark-red Howers in 

 yellow-leaved plants. As flowers of this colour are found exclusively on 

 green plants, it might perhaps be concluded that some coupling or 

 repulsion took place between flower- and leaf-colour, l^ut such is not 

 really the case, jis will be e;\sily seen from Table V. 



In this Table plants are classified into two groups according to their 

 flower-colour, i.e. those with white and those with coloured flowei-s. 

 From this we see that the ratio of individuals of these two classes, both 

 in green as well as yellow plants, is 3 : 1, despite the fact above noticed 

 that in the latter there were found no plants with dark-red flowers. It 

 will be readily understood from these considerations that we have here 

 to deal with neither coupling nor repulsion. 



In green plants the number of those with red, dark-red and white 

 flowers respectively is in the ratio 2 : 1 : 1, as shewn in Table VI. 



J Jounud of Genetics, Vol. vi. pp. 317—339. 

 Joum. of Gren. viii 



