434 



BOTAXICAL GAZETTE 



[DECEMBER 



Mass mutability of the non-characteristic mutations 



It has already been stated that Lexington E gives rise to certain 

 mutations which are common to the other strains of 0. pratincola 

 from Lexington, and that these non-characteristic mutations, as 



AJk 



-/^c--^y 



Fig. 2. — Progeny of Lexington E-5, pan 6 (part of culture 3; the remainder is 

 sho\\TL in fig. 3; see table II); the pan contains 49 plants, classified as follows: 



Row 



I typica typica 1 typica 



2 I typica setacea ' setacea 



3 ! typica setacea setacea 



:>etucea 



setacea 

 typica 

 albican^ 



setacea 

 setacea 

 typica 



typica 

 typica 

 typica 

 setacea 



typica 

 setacea 

 setacea 



setacea 



formosa 



typica 



setacea 



setacea 

 typica 

 setacea 



albicans 

 setacea 

 typica 

 typica 



typica 

 setacea 

 albicans mo. rgo; 



see fig. 10 ) 

 setacea 

 typica 

 typica 

 setacea 



