Well hidden vs Good spotting

Thought I had the day sorted to get away at a reasonable time only to be diverted from writing notes on the last of the new admissions that needed seeing, by staff wanting me to solve insoluble logistical problems. Needed some aerobic exercise after getting home and went for a walk in the Arch Hill Reserve, where I was pleased to get this photo.

There is a Tauhou in there, as I had thought.

I've returned to post an extra; I've seen this before, from adjacent to a highway, whereas this is fromabove the motorway. No idea what this flower is. Any identification help is welcomed.