Cola rostrata

Cola rostrata has sweet edible fruits, enjoyed by humans and also appreciated by monkeys, baboons and other primates. The edible part is the aril, the white fleshy mesocarp; the large, rough, brown, flattened seeds are not edible, unlike the seeds of the closely related cola nut (Cola nitida). The plant is not known to have traditional uses as a herbal remedy, but many members of the genus Cola do have pharmacological properties, and the plant was screened for potential drugs. An extract of the root bark was found to contain flavonoids, phenols, saponins, steroids, tannins and triterpenoids but no alkaloids. Triterpenoids are complex oils that may have interesting pharmacological activity. Saponins are haemolytic and tend to be toxic, but toxicological tests on the extract did not show toxicity when fed to mice.