The Jonquil is another name for the Daffodil which has the botanic name of Narcissus, however referring to these flowers as Jonquils is normally only done in North America. Technically speaking, the name Jonquil should only refer to the variation called Narcissus jonquilla and cultivars derived directly from that variation.
The traditional Jonquil is a ring of light golden petals with a trumpet shaped center of a darker contrasting shade of gold/yellow. Cultivators have changed the flower for some nurseries giving it several layers of petals, instead of the original one, sometimes making the flower look like a little golden ball.
The Jonquil is used prominently for decorating during the Chinese New Year in both China and festivals celebrating this holiday around the world. The Jonquil, is referred to as the Daffodil in Wales and is considered to be the flower of Wales, where a small area of Tenby grows their own, unique variation. St. David's Day is celebrated in Wales on March 1st and Daffodils are often worn for that holiday.