jutphaas

Updated: May 16, 2025

Total lack of historical evidence concerning the origin of a variety has sometimes been considered as sufficient proof of a sudden origin. The best known instance is that of the renowned cactus-dahlia with its recurved instead of incurved ray-florets. It was introduced from Mexico into the Netherlands by Van den Berg of Jutphaas, under the following remarkable circumstances.

Hugo de Vries - Species and Varieties, Their Origin by Mutation