Daffodils distinguished solely by botanical name should be assigned to Division 13. Division 4 - Double Daffodils have a clustered cup, petals or both. There can be one or more flowers per stem. Usually more than one flower to a stem, head drooping, perianth segments often reflexed and of silky texture. Division 6 - Cyclamineus One flower to a stem, perianth significantly reflexed and corona straight and narrow.
Some exceptions exist.
Usually three to twenty flowers to a stout stem , sweet scented and very short cupped. Perianth segments rounded and often somewhat crinkled. Division 9 - Poeticus Usually one flower to a stem. White petals sometimes stained with the corona color at the base, small flat cup edged with red. Division 11 - Split Corona Corona split for at least one third of its length.