THE best reply...

now, there are many many cataloged, and as a rule of thumb, many
botanist will admit that for every 5 names published, only one is of a
valid species.

Orchids seem to have 20.000 species appr. coming second after the
Asteraceae (the daisy family).
However, published names are by far too many.

For example, the genus Ophrys, on which I can comment, has 1.700
published names, and most botanists will agree that there are only
19~30 species at the most