Native selection from the Lavaca River, originally growing 2 1/2 miles south of Halletsville, in Lavaca County, Texas. The original tree grew near a river crossing, on land owned by G.W. Prilop, and was called Prilop by the first grafters. The cultivar is also called Steffek due to the work of F.T. Steffek in propagating the tree. Steffek collected graftwood from the ortet and propagated an orchard in 1939, before the destruction of the original tree due to a flood in 1940. The cultivar has also been called Kallus, after Louis Kallus, Sr., an early proponent of the cultivar who sent wood to the U.S. Dept. of Agr.-Agr. Res. Serv. Pecan Station in 1975. Nut: oblong with acute apex and obtuse base; round in cross section; shell smooth, with few markings; 78 nuts/lb, 57% kernel; kernels golden, with very thin dorsal ridge, especially at apex. Protandrous. Resistant to scab. Texas State Champion Native in 1991. One of the most widely propagated Texas natives in recent times, with more than 3000 acres in Lavaca County. Origin: Tree: Fruit: