It is the fungus cordyceps sinensis that takes place in the spring in Nepal and in the mountains of Tibet to 4,000 meters, considered a powerful aphrodisiac, no scientific studies that support it, whereby he paid up to 20,000 dollars per kilo. It belongs to the family claviceps. The claviceps purpurea or ergot, potent vasoconstrictor, in medieval Europe caused many situations of madness ( San Antonio 41 fire; and death. The yarsagumba is a parasitic relationship between the cordiceps and hepialus fabricius Butterfly larva.
