Thanks to Buckeye on ID Please Flickr I have had my mystery plant ID found.
Turned out to be
Bristly Ox-tongue Helminthotheca echioides.
This morning the flower was blooming so I got a series of pix. Then took a leaf and did some macro shots.
Tamron with the 10 dioptre lens gives 13mm = just below 2x.
With the 1.7 Tele-extender &; Kenko tube 11mm just over 2x
With the whole set-up 10 dioptre, extender and Kenko 6mm just below 4x.
Four times makes the bristles stand out but thanks to the ring flash they are reasonably sharp.