434 BOTANICAL 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 O. pratincola 
from Lexington, and that these non-characteristic mutations, as 
Fic, 2.—Progeny of Lexington E-5, pan 6 (part of culture 3; the remainder is 
shown in fig. 3; see table II); the pan contains 49 plants, classified as follows: 
1 
Row I 2 3 4 4 6 
wy ey typica | typica | typica | setacea | typica | setacea | typica 
ape re typica setacea | setacea | setacea | setacea | typica setacea 
Oe .| typica | setacea tacea | typica | setacea | setacea | albicans (no. 199; 
: see fig. 10) 
Fa typica | setacea | setacea | typica | setacea albicans} setacea 
ee oe typica | setacea | setacea | typica | formosa] setacea typica 
O25 iy typica | typica | typica | typica | typica | typica typica 
ima setacea | typica | albicans} setacea | setacea | typica | setacea 
