A data.frame with the following fields: orig.name (submitted name),
match.name (best match), genus and species (from the match.name), exact.match (1
indicates whether there was a perfect match for orig.name. 0 otherwise),
accepted (1 if the orig.name currently accepted, 0 otherwise),
synonyms (currently accepted synonyms, if any. For genus-only search, returns
genera associated with species formerly classified with the orig.name genus)
Empire,Kingdom,Phylum,Class,Order,Family: character strings with current higher
taxonomy associated with match.name