David, you just reminded me that I also have about 40 eBooks from the 16th to 19th centuries with old plant names, medical remedies, and sometimes discussions of the attribution of the plant name to the plant (critical evaluation of ones that were slavishly copied were discussed by some of the later authors who knew more about plants).
Whenever these old herbals reached a new region, there would be plants that weren't known, or some that were known, but they were uncertain if it was the same species and whether a different species would have the same medicinal properties.
I can't remember the title offhand, but there's a very good one by an English author with a knowledge of plants (something many of them didn't have) who goes through each plant typically included in the old herbals and discusses whether or not the attribution of the name to the plant is correct and, if not, what plant might be meant by the diagram/name.
Whenever these old herbals reached a new region, there would be plants that weren't known, or some that were known, but they were uncertain if it was the same species and whether a different species would have the same medicinal properties.
I can't remember the title offhand, but there's a very good one by an English author with a knowledge of plants (something many of them didn't have) who goes through each plant typically included in the old herbals and discusses whether or not the attribution of the name to the plant is correct and, if not, what plant might be meant by the diagram/name.