244 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



bean seedling in numerous characters. The axis may b e broadened 

 o£ divided. The cotyledons are highly variable in number and" 

 insertion. Axillary shoots from the cotyledons are abundant. 

 The primordial leaves are most variable in number and form. 

 P^oliar ascidia are frequent. 



Diagram 3. Interrelationship of number of cotyledons and number of primordial 

 leaves per plant. 



Both cotyledons and prirnordial leaves have a modal frequency 

 of four, but are highly variable in number. The cotyledons range 

 from 2 to 7 and the primordial leaves from i to 14 in the samples 

 studied in detail. The cotyledons have a mean number of about 

 3.70, with a variability of about 17.5 per cent. The primordial 

 leaxes have a mean of al)out 4.90, with a variability of nearly 

 40.0 per cent. Thus the primordial leaves are more variable in 

 number than the cotyledons. 



The correlation l)etween number of cotyledons and number of 

 leaves is low. 



