You are correct to assume that I did not research each tree individually, but I also did not create a table while I was working on this dataset. I went ahead and created one and it is now available on the wiki page https://wiki.openstreetmap.org/wiki/Canada:Ontario:Ottawa/Import/Trees#Common_and_Latin_names
As for the verification, the data was collected by the City of Ottawa Forestry Services using GPS software on computers. Even if I surveyed each tree individually, the tools I have are much less accurate. I'd argue that the background imagery should be aligned to these trees and not the other way around. I'm not sure how to satisfy your question when the tools used by my government are far greater than my cell phone. I've been working with this dataset for several months now so a lot of the visual verification has been done. Which only leaves 'a couple days' to simply add the data. Admittedly, I did have a lot more free time when I initially wrote the wiki page so I have updated it to be more realistic.
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