The International Daffodil Register and Classified List (1998)

Horticultural classification

Whether of wild or cultivated origin, once a selection has been distinguished by a cultivar name it should be assigned to Divisions 1-12. Daffodils distinguished solely by botanical name should be assigned to Division 13.

Notes

1. The characteristics for Divisions 5 to 10 are given for guidance only; they are not all necessarily expected to be present in every cultivar assigned to those divisions

2. Divisions 12 and 13 are not illustrated owing to the wide variation in shape and size between the flowers involved

Division 1 - Trumpet Daffodil Cultivars

Trumpet Daffodil    

One flower to a stem; corona ("trumpet") as long as, or longer than the perianth segments ("petals")

Division 2 - Large-cupped Daffodil Cultivars

Large-Cupped Daffodil    

One flower to a stem; corona ("cup") more than one third, but less than equal to the length of the perianth segments ("petals")

Division 3 - Small-cupped Daffodil Cultivars

Small-Cupped Daffodil    

One flower to a stem; corona ("cup") not more than one third the length of the perianth segments ("petals")

Division 4 - Double Daffodil Cultivars

Double Daffodil    

One or more flowers to a stem, with doubling of the perianth segments or the corona or both

Division 5 - Triandrus Daffodil Cultivars

Triandrus Daffodil    

Characteristics of N. triandrus clearly evident: usually two or more pendent flowers to a stem; perianth segments reflexed

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