This has to be Stegostyla species. Two known to be in my area are Stegostyla iridescens (Western Bronze) which this one possibly is and S. cucullata, the Hooded Caladenia.
UPDATE: Thanks to Denis' research, this orchid is Stegostyla cucullata. If you open the link, you will see Denis found a different species of the tiny Caladenia, Petalochilus mentiens and he has confirmed (in comments to this entry here) mine is Petalochilus pusillus.
(Click images to enlarge)
There was no colour on the petals (they were white) but for the speckling on the tips. Now this is where it becomes confusing! From what I've been able to determine with regard to S. iridescens, there is some petal colouring. However, the very dark purple labellum and composition probably rule out other Steogstyla species.
I found two colonies of them, both growing around old gold diggings.
This tiny Caladenia species is probably Petalochilus pusillus, the Tiny Petalochilus Orchid. The ones I've found are all the same colour and the flower measures no more than 10mm diameter.
This is Platylobium obtusangulum - Common Flat Pea. The leaf quite angular and it has a spreading habit.
Dillwynia globerrima - Smooth Parrot Pea, I believe.
I almost missed this small plant.
Grevillea alpina or Cats Claws/Mountain Grevillea.
Corrections welcome as usual.