Matching Plant Images Internally

[Mark Knowles]

(In this case it seems pretty clear that none match, and it's really a matter of determining the least bad option).

Choosing which plants match and which don't is ultimately down to the individual. I would think that each individual will make whichever determination that they feel best serves their research and best fits their model of the author/artist's mental processes. And as stated before the closeness of each match lies on a spectrum from those which very closely match to those for which the match is very weak. And of course a researcher may reassess their matches at any time.

By the way, I have not looked at matches yet in any detail, but there were a few instances where I thought there might be a better match.

You are right to look at every match in detail. Ideally what I or anyone else could do is write a note against each potential match detailing the ways in which it matches and the ways it doesn't. There can sometimes be very small, but subtle and significant differences between two plants.