Its use as a famine food in India has been recorded.

It is considered a famine food, eaten by subsistence farmers when their crops fail.

Its fruit is edible, and is eaten as a famine food.

The plant has been also used as a famine food by people.

The leaves and flowers are also a famine food in Africa.

It has often been used as a "famine food" (last reported during the 19th century in the Canary Islands).

They have been used as a famine food in India.

The tubers or the seeds are used as a famine food in India.

They are also used as famine food and known even to prehistoric man.

Some species are classified as famine food in southern Ethiopia.