ABNORMALITIES IN OENOTHERA. 



181 



were made on this subject. The records of these were kept 

 by my assistant, Mr. V. Follenius, during my absence, but 

 I had the opportunity of examining the most interesting 

 cases before the end of the season. Cases of polyphylly or 

 synanthy were found in a much wider range of Oenothera 

 forms than in the previous year. The following is the list: 



The case of No. 4, in which two tetramerous flowers were 

 found, each with its bract, and only partly fused by their 

 ovaries and hypanthia, is particularly instructive and con- 

 firmatory of my explanation. One hexamerous (No. 8) and 

 one pentamerous (No. 9) flower, however, had each but one 

 bract at its base, as well as the three trimerous flowers in the 

 race 0. biennis X 0. Lamarckiana. It is therefore prob- 



