GARDENING NOTE: All daffodils are Narcissus, which is the genus name. According to the International Cultivar Registration Authority (for Narcissus and for several other flowers that is the UK's Royal Horticultural Society) daffodil is accepted as a common name for all members of the Narcissus genus. However, most people think of daffodils as the single flower, large trumpet yellow ones, which are the most common kind of daffodils, and call the smaller headed scented varieties, narcissi . The Oxford Dictionary defines narcissus (plural narcissi ) as "any of a group of flowers including jonquils and daffodils, especially the kind with heavily-scented single white flowers". In fact, even the growers of the scented varieties ... call all of their products white or yellow, single or multi-headed, " narcissi ".The flower is named after Narcissus in Greek legend ... "Narcissus" comes from the Greek for "numbness" referring to the narcotic proper...