It's not wrong. It is a species. Toxicodendron radicans is an accepted name.
http://www.catalogueoflife.org...
You wouldn't ever enter two "toxicodendrons," but I can see why you might think so because the common names of some plants are the same as their Latin names, so you might see entries that read:
Dahlia (Dahlia australis)
This looks like Dahlia was entered twice, but the first "Dahlia" is the common name and the second one is the genus.
