8 



MASS. EXPERIMENT STATION BULLETIN 413 



blade as in many varieties, somewhat down on the petiole as in California Blue, 

 or scattered along the petiole as in Formosa. The color of the glands is sometimes 

 useful, varying from green as in Sannois to yellowish as in Agen, and occasionally 

 somewhat reddish as in Pearl. 



The leaf blade is very important. The various characteristics will be treated 

 separately. 



Figure 4. Leaf Shape. 



1. MONARCH — roundish; 



2. HALL — oval; 



3. ITALIAN — obovale; 



4. RED JUNE — elliptic; 



5. BURBANK — long obovale; 



6. WICKSON — narrow elliptic. 



