@huangyonglin
Its said that the tubers of this plant help to save people from snake bites and scorpion attacks.
Also the seeds contain a chemical called Colchicine,are used in treating joint pains and rheumatism.
Due to this medicinal benefits, this plant is a money earner for the farmers in Tamil Nadu and grows well in the districts of Thiruchi, Karur, Ariyalur, Dindigul, Namakkal, Erode and Coimbatore.