304 Heterostylisni in Primula 



style and 4 long-style when self-fertilized, and 9 short-style, 1 1 long- 

 style, when crossed by the recessive. The other short-styled plant, 

 when crossed by long-style, gave 4 short-style, long-style ; other 

 experiments with this plant failed, so that '\i remains doubtful whether 

 it was pure or heterozygous. It was the only short-styled plant, from 

 which seeds were obtained, which was not definitely shewn to be 

 heterozygous. Altogether, the heterozygous short-styled plants, self- 

 fertilized, gave 39 short-st3'le, 13 long-style. The crosses of hetero- 

 zygous short-style % x long-style (^ gave 1 1 9 short, 138 long ; the 

 reciprocal crosses gave 110 short, 96 long; or a total, for the matings 

 in both forms, of 229 short, 234 long. The results of my experiments 

 are shewn in tabular form below. 



