Broom Spurge

Amperea xiphoclada

A wiry shrub to 60cm high, apparently leafless, with several strongly ridged stems arising from a woody rootstock - NPOS p.165

I found this one just out the back of the house. In the close up picture you can just see the tiny tiny leaves. They’re barely noticeable, growing straight out of the stems, on some you can see serrated margins.