There are over 9,000 grass species worldwide and around 200 have been recorded in Jordan. Grasses are characterized by hollow stems with spaced nodes, sharp-edged leaves (blades) with a lower segment that hugs the stem (sheath), small flowers clustered in spikes, and simple dry fruit known as grain. Grass blades grow at their base, which enables them to continue growing even after being grazed by animals. Remains of wheat and barley in early stages of domestication from wild grasses were found in prehistoric human settlements in Beida, north of Petra.
Widespread in all habitats.
Mainly in spring.
In addition to their importance for grazing animals, some domesticated grasses produce edible grains essential to humans such as rice and wheat. Other grasses are also very useful to humans such as reed and bamboo.