Saharan shrubs require very little water and have roots that can extend deep into the ground. This allows them to attach to areas of the ground that can hold water more readily than the sandier surface layers. Saharan shrubs are typically located in valleys where the moisture content will be higher.
Salt-tolerant plants include succulents and halophytes that are typically found in areas that have a high salt content, such as Saharan valleys and saline depressions in the desert. Salt-tolerant plants can retain moisture for long periods of time, enabling them to survive in extremely dry climates.
The Saharan Desert is extremely hot, which would cause most species of plants to wither and die. Heat-tolerant plants, such as heat-tolerant grasses, can survive in certain areas of the Sahara, however. Heat-tolerant grasses require little water and can withstand temperatures in excess of 120 degrees Fahrenheit.
