Sedge

Sedges are herbaceous plants that resemble grasses because of the shape of their leaves. What sets them apart are their flowers and fruits, which differ in both form and structure. In particular, the fruit of Carex species—called an achene—is not fused to the fruit wall, unlike the fruit of grasses such as wheat or rice, which is known as a caryopsis.

Depending on the species, Carex stems can range from 10 cm to over 100 cm in height and are generally triangular. Their leaves are usually linear, pointed and sometimes sharp-edged.

The flowers are located just above the point where small, modified leaves, called bracts, are attached. They are grouped into spikes, which vary in shape depending on the species.