144 



Ataz'isjii. 



§ i6. CLARKTA PULCHELLA. 



A wliite variety of this pretty red species is offered 

 by seedsmen.-^ Besides this a striped race sometimes oc- 

 curs which has more or less numerous red bands of vary- 

 ing breadth on the petals.^ The red in these cases has 

 the same intensity as that of the species. Moreover the 

 white flowers are not pure white ; a very delicate but 

 distinctly visible red flush can be seen on any bed of 



them in full flower. Sometimes 

 occasional plants or individual 

 flowers are somewhat richer in 

 pigment, so that it is at once 

 obvious that they are not pure 

 white. 



I have only made an in- 

 complete series of experiments 

 with this plant because it does 

 not lend itself easily to artificial 

 fertilization and, as a rule, does 

 not stand transplanting while 

 in flower. But the results ob- 

 tained suffice to demonstrate 

 their essential correspondence 

 with those obtained with Antirrhinum and Hcs peris. 



We can distinguish in this as in the other two cases 

 between a pale race poor in stripes and a richly striped 

 one ; moreover these two races possess the characters of 

 the corresponding ones in the two species named. But 

 in Clarkia the broad stripes appear chiefly as sectors, as 



^ There is also a variety, Carnea, which is constant so far as my 

 experience goes. 



''See p. 119. It was referred to by Vilmorin and hy B. Verlot, 

 Production et fixafion des varictcs, 1865, p. 64. 



Fig. 25. Clarkia pulchella. 

 A white flower of which 

 one petal and a half are 

 dark red, while there are 

 dark red stripes here and 

 there on the other two 

 petals. 



