In order to compare and contrast these Tiny Greenhoods more precisely I have "matched and patched" the photos I have (so far) of the Green form of the Tiny Greenhood (which is the named species) Speculantha parviflora with the as-yet un-named local brown form. Both of these species are growing in Kangaloon.
You can see now, more clearly, the point I was trying to make yesterday about the different shape of the "hood" (the "galea"). The brown form is noticeably blunt in front. And the green species clearly has a more prominent shelf or platform on the "sinus" - the front of the flower, underneath the opening.
Having done that I decided to also "match and patch" another similar plant which I was shown near Nowra, last year.
Clearly there is work for the Orchid taxonomists to do here (click on the image to enlarge it). The Nowra form (on the far right) is browner (all over). But we know these plants can change colour as they age, so I would like to see these plants over the full duration of their flowering cycle. However, the "points" or "ears" are distinctively longer, and swept back (giving the flower a wind-swept look). These points are noticeably longer than either of the other species. Also the Nowra form appears to have a really flat front, but that might be an illusion, because of the angle at which the photo was taken.
Interesting stuff. These are tiny plants, but significantly different, when you get up close with them. I shall have to try to get better photos of them (from different, but comparable angles). Hopefully I can also get to see and photograph the Nowra plants again, too.