I'm starting to rethink this a little bit, Janice.
jmorth references a book, published in 1995 by RHS, that references a species. Is it impossible that the RHS website might miss something?
And I do have a question about other lists out there. There are quite a few species that are still accepted (not been relegated to synonym or other status) but the RHS ignores these. What do we do with that?
It seems to me like if we have a species that is being referenced in modern books, do we not want it listed in our database?