TABLE 3 



Analysis of the F. generation resulting from self-pollination off. ty pica plants chosen at random 

 from the non-segregating F 3 progenies (see table 2) of the cross mut. formosa X mut. latifolia C. 



All of the plants are flat-leaved, demonstrating further the presence of homozygous domi- 

 nants in the F 2 generation of the cross. Of the 326 plants grown to maturity, taken in part 

 from each of twelve cultures, 320 proved to be f. typica and of the remaining 6 plants 2 

 were mut. nummularia, 7 2 were mut. fallax, an undescribed mutation, as a seedling very much 

 like mut. nummularia and thrown by the same strains, 1 was probably mut. gigas* and 1 

 resembled mut. angustifolia. 9 



TABLE 4 



Analysis of the F* generation resulting from self-pollination of f. typica plants chosen at random 

 from the segregating F 3 progenies (see table 2) of the cross mut. formosa X mut. latifolia C. 



Of the three cultures, two are segregating and one is not, showing the presence of homozygous 

 and heterozygous dominants in the F 3 generation from heterozygous Fj plants. Of the 64 plants 

 grown to maturity from the two segregating cultures 52 proved to be f. typica, 1 was mut. fallax, 

 10 were mut. formosa, and 1 was mut. setacea, 10 which is a revolute-leaved type thrown by mut. 

 formosa. All of the 25 plants of the non-segregating culture proved to be f . typica. 



6 In this and subsequent tables the dagger (f) indicates that seeds from two or more capsules 

 were sown together. 



7 Mut. nummularia, a mutation commonly thrown by strain C, but never by pure strain E 

 See BARTLETT 1915 a, p. 97; COBB and BARTLETT 1919. 



8 See BARTLETT, 1915 b, p. 443. 



9 See BARTLETT, 1915 b, p. 438. 



10 See BARTLETT , 1915 b, p. 450. 



GENKTICS 6 : 28 Ja 1921 



