Cordyceps militaris, also known as cordyceps flower, is a fungus parasitizing in insects: it normally grows in lepidopterous larvae and can also be artificially cultured on grain, being an edible mushroom that can be industrialized. Cordyceps militaris is sometimes mistaken for Cordyceps sinensis due to the close resemblance thereto, and the latter is also considered to belong to the Cordyceps genus. Then, what are the differences between the two? Does Cordyceps militaris also have the efficacy of Cordyceps sinensis?