Aerva lanata Juss. Amaranthaceae.
Tropical Africa and Arabia. According to Grant, this plant is used on the Upper Nile as a pot-herb.
Sturtevant's Edible Plants of the World, , was edited by U. P. Hedrick.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.