Two nits to pick, one major, one minor: Major: "Common names simply don’t work on a large scale. One common name (ie “cedar”) can refer to 8 different totally unrelated plants, where as Cedrus refers specifically to the genus which contains the species C. libani, C. deodara, and C. atlantica." Actually, those 8 different plants are hardly "totally unrelated". They are quite closely related in the evolutionary scheme…
To nit 1: "totally unrelated" could reasonably mean "not in the same genus", but even relaxing that to "not in the same family" holds true for the word "cedars". The author's point about "common names" seems pretty salient To nit 2: I fail to see what you're actually nitpicking here... How evolutionary related things are and how they evolved _are_ pretty well illustrated by taxonomic ranking. Some organisms (in a sta…
Yes, they are "totally unrelated" in the sense that I am likely totally unrelated to you, but this not a very evolutionary sense of the word "related".