Jan., 1908.] Variation in Syndesmon and Hepatica. 



435 



4. The number of sepals and carpals is greater on the ter- 

 minal flowers than on the lateral ones. 



5. The number of carpals and sepals is greater according as 

 the number of flowers on the plant is greater. 



TABLE VII. CORRELATION OF POSITION AND NUMBER OF FLOWERS WITH 

 NUMBER OF SEPALS AND CARPELS IN THE LOT FROM A. MADISON, 



MAY 2, 1902. 



No. OF Flowers 

 ON Plant 



No. OF Sepals 



terminal 



lateral 



No. OF Carpels 



terminal 



2 



3 



4 



5 



All plants 



lateral 



10.0 

 10.2 

 12.6 



15.2 



11.7 



6. There are probably changes in the number of the several 

 parts through the season, but the data is too conflicting to permit 

 generalizations as to the direction of these changes in each case. 



7. These results agree with those of Shull on Aster that place 

 modes of floral parts cannot be used for geographical comparison 

 without the most careful discrimination as to the other causes 

 which affect the number of parts. 



HEPATICA. 



A study of Table VIII leads to the following conclusions: 



1. Hepatica acuta (Pursh) Britton has a larger and more 

 variable number of sepals than Hepatica Hepatica (L.) Karst. 



2. The proportion of the individuals having flowers of the 

 several colors differs greatly from one general locality to another 

 and even from grove to grove in one locality. 



3. There is no consistent correlation of appreciable magni- 

 tude between the number of flowers or number of sepals and 

 the color of sepals. 



4. The number of sepals per flower is regularly greater whei^e 

 the number of flowers per plant is greater. 



5. The number of sepals has a skew variation towards 

 increased number of sepals in conformity with most floral 

 variation. 



