One particularly promiscuous mushroom, known scientifically as Schizophyllum commune (and affectionately as "schizo"), looks deceptively mundane. It's a form of wood rot that lives in parts of the East Indies, Thailand, India, Madagascar, and Nigeria, where plenty of people eat it—despite many Western guidebooks classifying the shroom as "inedible." Apparently the tough, rubbery texture isn't a turn off for other cultures. It's used medicinally, too, since—like many fungi—it has antiviral and antifungal properties to keep it safe in the wild. And if you knew nothing about mycology, you'd never expect a humble white wood rot to have tens of thousands of sexual variations.