I think that one purpose for providing the phrag checklist is to invite comments from orchid growers who have genuine and serious questions about the placement, naming and the identities of the listed species.
When the Paphiopedilum checklist is published, I for one, will be very interestred in reading comments listed on this forum.
It has always bothered me that Kew botanists base their identifications solely on dead, damaged, decomposed (on a continuous basis) herbarium specimens and have continuously resisted any modernization of their tools and criteria. While herb sheets are useful, they all have their problems which include missing or insufficient data, some are described with a single sentence, ....or even with just a three or four word location. Herb sheets require a lot of guesswork! It's this guesswork that causes us orchid growers problems.
The current questions on this forum about P. godefroyae and P. leucochilum are a perfect example. Phil Cribb never went to the Gulf or Siam or the Gulf of Krabi. I don't know of any taxonomist who has. All current opinions, except my own (see my paph book, pgs 42-45), are based upon herb sheets housed at Kew and the interpretations of Kew botanists. There remains considerable confusion because of this.
I have been to the Gulf of Siam and the Gulf of Krabi, on two separate explorations. I have traveled over the Tennaserrim Mtn Range and experienced the great divide as I went from one location to the other.
Do you know the difference between chalk and cheese? How about night and day?
Once seen and 'touched' is is a very simple matter for anyone to imediately understand the differences between these two species.
Like I said, herb sheets are useful, BUT they only tell part of the story. For anyone to base judgement strictly upon their use is an injustice to modern science and a dereliction of duty to the orchid world.
The current practice of breeders who try to 'improve' species, such as the above two (and several others) by inter-crossing lookalike but separate species has led to serious problems with identifications of many orchids.......but don't get me started.
That's my opinion.