corn-chrysanthemum

Updated: August 3, 2026

We have already demonstrated such a case when dealing with the origin of our double corn-chrysanthemum. The wild species culminates with 13 rays, and the grandiflorum variety with 21. Often the latter is found to be impure, being mixed with the typical species to a varying extent.

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