There can be from one to a dozen or more flowers per stalk.
Flower colors are mostly white and yellow, but some kinds have orange, pink or red coronas.
There are about 50 species of daffodils, and many thousands of named cultivars and hybrids of garden origin. There are so many daffodils in cultivation that horticulturists have classified them into 13 divisions. See Floridata's Daffodil Gallery for definitions and photographs of the daffodil divisions. Most other daffodils have flat leaves. Most daffodils bloom within 4 to 6 weeks after the first appearance of foliage in the very early spring.