raphanistrum

Updated: May 15, 2025

With a distance of 100 meters between them I had two hybrid seeds among a hundred of pure ones. At a similar distance pollen was carried over from the wild radish, Raphanus Raphanistrum, to the allied Raphanus caudatus, and I observed the following year some very nice hybrids among my seedlings.

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