1919] 



Frost: Mutation in MatthioJa 



107 



with its aborted main axis and very late production of a flowering 

 shoot. 



Table 14 shows the general plan of the house-sown field cultures 

 of 1911. The progeny of WG9-C10 were arranged as before in the 

 order of their numbers of internodes for each house of the 1908 cul- 

 tures, beginning with the lowest numbers. The parental values for 

 flowering and internodes are the values indicated by "$" in tables 5 



Table 14 



1911; -field, plants transplanted from greenhouse. Ancestry, seed, and 



numbers of progeny.^ 



'' For plan of arrangement and parental data, see page 86 and tables 5 and 6. 

 Seeds from unguarded flowers are indicated by italic figures; where two numbers 

 are given the first is the total. 



" Including twelve plants (all late mutants) with which determination of the 

 form of flower was impossible. 



