118 BOTANICAL GAZETTE [FEBRUARY 
cultures of 1914. The two mutations of Lexington C (nos. 28 and 
57) which passed muster as typical plants when the seedlings of 
1913 were examined would probably not have been missed in the 
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Fic. 14.—F, progeny of Lexington C, Oenothera pratincola (pan 3 of the progeny 
of C-72); two mutations are shown, mut. subulata, C-72-5, and mut. nummularia, 
C-72-6; the other plants are typical. 
more searching scrutiny which the seedlings of 1914 underwent.” 
Although some of the mutations cannot be distinguished in the 
young seedling stage with ease, it is believed that the likelihood 
22 Mut. nitida, represented by Lexington C-57 in the cultures of 1913, occurred 
several times in 1914 and was detected in the young seedling stage in every case 
Nov. (1914). 
