Bul. 815, U. S. Dept. of Agriculture. PLATE VII. 
TYPICAL FRUITS OF A CORRUGATED VARIATION FOUND ON A TREE OF THE 
OPEN STRAIN OF THE LISBON LEMON. 
This variation has been frequently found as individual fruit, limb, and entire tree bud sports. 
The fruits are commercially worthless, but are interesting as throwing light on the origin of 
lemon strains from bud variations. Nearly natural size. he fruit at the lower right hand 
is 23 inches long. 
