Origin: in California; scions secured by Millard Sharpe of Vacaville, Calif., from one of the Tribble brothers of Elk Grove, Calif. Introd. in 1955. Parentage unknown; discovered about 1925; tested by Sharpe and later by R.J. Button of Vacaville and E.F. Serr of the California Agr. Expt. Sta., Davis. Nut: very large; round; kernel percentage high, being 5% to 10% higher than most commercial varieties; kernel light colored and heavy (50% heavier than average varieties). Tree: very fruitful (many lateral buds produce pistillate flowers); early bearing. Named in memory of Millard "Sharkey" Sharpe (1884 to 1954). Fruit:
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