Sally K. Marr, a former vaudeville and burlesque comedian and the mother of Lenny Bruce, died Sunday at Cedars-Sinai Medical Center of heart failure. She was 90.A native of Long Island, she began her career as a teenage dancer, which she later parlayed into a vaudeville act and comic act. She later moved to the West Coast to be with her son, a rising comic at the time. She appeared in several films including “Harry and Tonto” (1974). In 1994 Joan Rivers portrayed Marr in the Broadway play “Sally Marr … and Her Escorts,” which preemed at the Helen Hayes Theater. Services will be at noon Thursdayat Eden Memorial Park in Mission Hills. A memorial service is planned for January. Marr is survived by a granddaughter, Kitty Bruce.