Both D chryseopsis and D amabilis can have brownish markings, but the latter is a much larger flower. Based on location most likely to be chryseopsis, but its a bit hard to judge size in the photo
Unfortunately newly uploaded photos don't appear for sightings (it's a current bug). In the meantime you might have to upload those photos as a separate sighting.
Have added four photos. The first three were taken in the same area as the initial picture. The last one was near the hybrid orchid reported on the same occasion, close to the Centennial Trail on the Southern boundary of Little Mulligans Flat. Hope these help - noting that, as a non-expert I can't be sure they are all the same.
I have just had another look over this, and I think these are D. chryseopsis. I can't see the deeper colours that I would associate with D. amabilis, and the shape of the callus looks fine for D. chryseopsis.
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