Lutz, Triploid Mutants in Oenotheru. 



391 



pubescent. A little later it was again recorded as resembling 

 O. Lamarckiana, though having a broader leaf and shorter petiole 

 than O. Lainiirrkifinu. On May 12 it was described for the first 

 time as having many characters suggestive of 0. gif/as. It strongly 

 resembled a plant from the latter culture which did not come to 

 flower. On June 24 it was so badly attacked by aphids that it 

 was difficult to describe, but the petioles had increased so much 



Fig. 4. 



in length that it no longer appeared to be O. yigns, though it still 

 had many points suggestive of the latter form. At maturity how- 

 ever, 0. f/i(/as was again strongly suggested in the large size of the 

 buds and flowers, and the deep yellow color of the petals, the 

 stoutness of the stem, branches and all parts. 



0089 differed from the 21-chromosome mutant chiefly in the 

 manner of branching, which suggested 0. Lninarrkiana very little, 

 if any at all. A comparison of photographs will show that the 

 basal branches (4 in number) were much more rapidly ascending 



