A SPECIAL REPORT: INVENTORS

BERRY BELOVED: Orange County is home to Leo Fender’s electric guitar and Hobie Alter’s lightweight catamaran. But little is made of its most famous invention--the boysenberry, a graft of the loganberry, raspberry and blackberry. . . . Anaheim farmer Rudolph Boysen concocted the hybrid, Walter Knott popularized it in the 1930s, and now it’s popular in jams and yogurts. “I doubt that anyone stops to think about the boysenberry’s origin,” notes Marion Knott, Walter’s daughter. “After 50 years, it’s just become a generic name.”