Shull: Three New Mutations 



361 



CHARACTERISTICS OF THE FUNIFOLIA MUTANT 



The illustration on the left shows (above) a young rosette of Oe. Lamarckiana, and (below) 

 one of the funifolia mutant. When typically developed, the mutant can be detected even in 

 very early rosette stages. 



On the right is shown an adult plant of the funifolia mutant. By comparison with Fig. 1.5, 

 it will be seen that the mutant is distinguished from its parent by the complete lack of basal 

 branches. (Fig. 14.) 



genetic results of the utmost value in 

 working out the genotypic constitution 

 of the Oenotheras. So far as I know 

 no other "break" has occurred in the 

 flower-color of Oenothera until mut. 

 vetaurea appeared in my cultures during 

 the past summer (1921). This muta- 

 tion consists in a departure from the 

 common citron yellow color typical 

 of all wild species of this genus, to a 



color which ranges from Naples yellow 

 (Ridgway) in the more distal portions 

 of the petals, to slightly deeper shades 

 in the same series of colors, in the 

 center of the flower. The filaments and 

 the distal portion of the stigmas are 

 approximately primulinus yellow. The 

 warmer tone in the center gives the 

 flowers an aspect almost as if they were 

 aglow with a light of their own. 



