Origin: in Napa, Calif., by Rudolph Boysen. Introd. in 1935 by Walter Knott, Knott's Berry Farm, Buena Park, Calif. Parentage unknown but is of type as might be expected from a Logan × Lucretia cross; some consider Himalaya as the female parent; seedling grown about 1920; bushes transplanted to Anaheim, Calif., in the late 1920s. Tree: trailing (dewberry type); more vigorous than Young; high yields. In California, Boysen and Nectar are different varieties. Fruit: black; flavor very fine but not as sweet as Young; size extremely large, 1 1/4 inches or more long; rather soft; aroma distinct; covered with a dusty bloom; bears through August in some areas, ripens 1 week before Young.