possibly-the-green-form-of parsons-bands-orchid
If you’re an Orchid enthusiast I would appreciate some feedback on whether this is the green form of the Parsons Bands orchid..

We have quite a few Parsons Bands Orchids in flower at the moment, but this one stands out through the lack of pink or red.  Potentially it is a green form, as referenced on the Retired Aussies  website.  I have not found reference to this colour anywhere else.  So, if you have knowledge of this variation, I am keen to hear from you.

When I took this photograph I was photographing a number of other plants.  I only noticed the difference after I loaded it onto the computer.  This means I have no idea where to search to find it again.  However, I will be on the lookout for another one.   The Retired Aussies website suggests it is rare, but it does not appear on the list of rare plants I have from DEPI.  My questions are:

1.  Is this a subspecies of Eriochilus cucullatus?

2. Is the colour variation specific to a geographic area?

3. It is obviously unusual, but is it a rare plant?