No, I wouldn't doubt the reliabiliy of books from Tobago or Samoa right away, the only trouble is: you can't get hold of these books in a
German library. That's all.
But what I'll do in the case of "rhodon": There is a well-known scholar in Germany by the name of
ROSA Kohlheim. Together with her husband she has written a number of very good books on names. I've exchanged letters with her before and maybe she would be interested in the rose discussion for personal reasons. I'll try anyway.
Andy ;—)