Narcissus grow in very large quantities in Spain. In many areas two or more species or sub-species grow together in close proximity and wild hybrids can be found.
Abbreviations used in these pages:- Blanchard - Narcissus A Guide to Wild Daffodils (Alpine Garden Society 1990) RHS - Daffodils or Daffodils and Tulips (The Royal Horticultural Society) TDS - The Daffodil Society News Letter