Abstract
Two hundred and seventy carbonized naked wheat ears from the Neolithic pile dwelling at Hornstaad-Hornle IA/Lake Constance (Germany) were analysed. The characteristics of internodes and glumes show that only tetraploid naked wheat types were cultivated. Following the history of free-threshing wheats it seems conceivable that the tetraploid naked wheats spread from their point of origin in the Middle East (7th/8th millennium B.C.) via a Mediterranean route to southwest Europe, reaching the northern foothills of the Alps about 4000 B.C.
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