Clarkia PulchcUa. 145 



for instance, wliolc or half petals; T shall therefore call 

 such flowers and plants sectorial. 



In 1896 I had a bed of about 50 plants all of the 

 flowers of which were whitish. The majority bore no 

 red stripes, or only such fine ones and so rarely that they 

 were overlooked, which is always possible since the ])lants 

 produce very many and rapidly fading flowers. Only 

 one ])lant stood out amongst the rest; at the end of July 

 it bore a flower with two red petals and at the beginning 

 of August a petal the middle third of which was also 

 colored red. Otherwise, the bed was practically white 

 throughout the summer. Some of the seed of the whites 

 was saved. 



From the seeds of a w^hite flowered specimen I ob- 

 tained in 1897 a culture of about 100 plants. Amongst 

 these again there was only one sectorial example ; I saved 

 its seeds separately although it had been fertilized by 

 insects in the midst of the others. In the majority of 

 these others I had not seen red stripes, but on a few of 

 them there had been some insignificant ones. 



The seeds of the pale flowered plants gave rise to a 

 generation equally poor in stripes; in 1898 I only saw one 

 striped one amongst 30. This race therefore remained 

 poor in red sectors as a result of a continued selection 

 of almost white plants. 



From the seeds of the sectorial plant I at once ob- 

 tained a race which was rich in red petals and red s-? ^- 

 tions of petals, and often produced whole red flowers 

 and twigs with red flowers only (Bud-variation). I 

 grew it for two generations (1898 and 1899). The seeds 

 for the first were gathered in 1897 from a seed-parent 

 which had not been isolated; in 1898, however, I pulled 

 up all of the non-sectorial plants whilst they were in 



