Two Lata- Families. 



285 



ily. Its origin is the same as lliat of the main h"ne of 

 descent of the Lamarckiana-i^xnWy referred to on page 

 224. The seeds of the nine biennai individuals of the 

 period 18S6-7, there mentioned, gave ten mutants: five 



OENOTHERA LAMARCKIANA. 



C 



PEDIGREE OF THE FIRST LATA-FAMILY. 



(The figures refer to the number of seedlings; the sign 

 that this number was not counted.) 



means 



GENER.\TIONS 



SPECIES 



albida 



na- 

 nella 



O. lata I 



+ ! 



O.Lam. 



ob- 

 Jongra 



rubrr- 

 nervis 



sub- 

 line- 

 aris 



ellip- sub- 

 tica ovata 



VIII 



VII 



VI 



V 



IV 



III 



II 



8th gen. 

 1900 



7th gen. 

 1899 



6th gen 

 1898 



5th gen. 

 1897 



4th gen. 

 1895 



3rd gen. 

 1894 



2nd gen. 



(biennial) 

 1888 1889 



1st gen. 

 (biennial) 

 1886-1887 



Lam. 



dwarfs and five O. lata ; it is from these latter that the 

 family in question arose. But in most years, as I have 

 already stated, they did not mutate. 



