Almost overnight, the unloved Jatropha curcushas become an agricultural and economic celebrity, with the discovery that it may be the ideal biofuel crop, an alternative to fossil fuels for a world dangerously dependent on oil supplies and deeply alarmed by the effects of global warming.
The hardy jatropha, resilient to pests and resistant to drought, produces seeds with up to 40 per cent oil content. When the seeds are crushed, the resulting jatropha oil can be burnt in a standard diesel car, while the residue can also be processed into biomass to power electricity plants.
As the search for alternative energy sources gathers pace and urgency, the jatropha has provoked something like a gold rush. Last week BP announced that it was investing almost £32 million in a jatropha joint venture with the British biofuels company D1 Oils.
Jatropha has long been prized for its medicinal qualities. Now it might just help to cure the planet.