Recently, I was asked...

...why I include Genus and Species when referring to specific Flora and/or Fauna. It is because Common Names are just that. Common to a specific area or group of people. For example, a favorite wild or woodland flower is Erythronium americanum, aka. Trout Lily, Adder's Tongue or Dog Tooth Violet. It has been called Trout Lily because its leaves are speckled like a trout, it blooms at trout season and is in the Lily Family. Some call it Adder's Tongue because its flower reminds them of an adder serpent. Yet still others know it as Dog Tooth Violet because its root looks like a dog's tooth, and perhaps seems similar to a yellow violet. I suppose it isn't any different than all the nicknames we have for each other.
Robin Wall Kimmerer wrote in her book Gathering Moss, "It is a sign of respect to call a being by its name, and a sign of disrespect to ignore it. Words and names are the ways we humans build relationship, not only with each other, but also with plants." I fully agree.