Willows

Shrubs and trees of all sizes, willows (Salix spp.) may grow up to 30 m tall. Some are even prostrate. Their twigs are usually slender and flexible and frequently break off. On some species, however, they are long and strong. The colour of the twigs and buds varies, but dull yellow and orange predominate.

With few exceptions, they all have alternate, single (some finely toothed), long, straight leaves. They are lance-shaped or elliptical and have a short stalk in comparison with the length of the blade. At the base of the stalk are two small leaf-like organs, called stipules, that may remain on the tree all summer long.

In winter, willows can be identified by their buds, which are covered with a single scale.

It is often difficult to distinguish between the various species of willows, because they are generally recognized by their flowers and fruit, which do not remain on the tree for long. Identification is also complicated by the fact that the trees are dioecious (male and female flowers are borne on different individuals). Male trees therefore bear no fruit. There are also a number of hybrids.