Origin: in Madera County, Calif., by Wm. T. Kirkman, Jr., Tracy, Calif. Introd. in 1942. Plant patent 506; 17 Mar. 1942; assigned to Kirkman Corp., Tracy, Calif. Rio Oso Gem mutation; discovered in 1937. Tree: medium vigor and productivity; flower large, showy, light pink; leaf glands reniform. Fruit: large; round; truncate; skin yellow, blushed, tough, ventral suture with a deep reddish streak about 1/4 inch wide, which appears in advance of rest of color; flesh yellow, streaked with red next to stone, juice moderate, firmer than Rio Oso Gem, flavor mildly acid, ripens evenly; freestone; ripens in mid-September, 4 to 5 weeks after parent; resembles Rio Oso Gem.
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