daisy-group

Updated: May 15, 2025

But, as I have already said, further proof must be left for a subsequent occasion. Many instances, noted in our former lectures, could be quoted here. The systematic distribution of rayed and rayless species and varieties among the daisy-group of the composites affords a long series of examples. Accidental variations in both directions occur.

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