tansy-ragwort

Updated: May 6, 2025

Experimentally I raised in succeeding years between 1000 and 2000 seedlings, but observed no trace of reversion, either in the strongest or in the numerous very small and weak individuals which appeared in the cultures. The tansy-ragwort or Senecio Jacobaea may be chosen as a second instance.

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