John Holliday gets excited when he's talking about mushrooms.Walking through the offices of Aloha Medicinals on Arrowhead Drive on the north side of Carson City, Holliday veers into a side office to show off a collection of exotic cordyceps, tiny mushrooms that grow out of the bodies of dead insects like caterpillars and crickets. These fungi have been gathered from remote areas in Asia and South America with the hope of curing everything from the common cold to cancer.Aloha Medicinals is a bio-pharmaceutical company that specializes in creating the raw materials from mushrooms to make medicines, particularly immune-enhancement products. Holliday …