vitis

A few of us may know, or can infer, what the genera vitis or nicotiana refer to. Fewer, perhaps, malus or pyrus. How many of us are familiar with solanum? Humulus? Triticum? Hordeum? Zea? Marijuana. Pot. Weed. Ganja. Reefer. Whacky tobacky. There are countless names for the drug that has...