There are many types of daffodils or jonquils; but the most common variety looks like the one in the above photograph. Daffodils essentially consist of a trumpet [or cup] that sits in a saucer, which is comprised of 6 petals.
The trumpet and/or petals are usually golden yellow or a combination of yellows and whites. However, there are even cultivars of red and pink daffodils.
Some daffodils have a short trumpet; but most have longer trumpets.
Daffodils belong to a common group of flowers by the name of narcissus