Lobelia.
Botanical name:
Lobelia sp.? Campanulaceae. Lobelia.
The roots of one species are said by Thunberg to be eaten by the Hottentots. It is called karup.
Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.
A herbal distance course
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.