SUMMER KEY TO THE SPECIES OF PYRUS 



a. Leaves simple; fruit a light green pome an inch or more in 

 diameter; branches contorted, bearing many short, spur- 

 like branchlets P. coronaria, p. 145. 



aa. Leaves compound; fruit berry-like, Y^ inch in diameter, 

 bright red ; branches not contorted, not bearing many short, 

 spur-like branchlets P. americana, p. 147. 



142 



