@Green Witch,
To explain right away, my screen of names is diminishing as I am not in practice, so I have to me amazing dumb spots. I'm having one now, but I'll continue on the subject, which with luck I'll come back to if I remember the names.
Our friend Harvey had a hedge which he called "mock orange", a name I had for another plant. We were both probably right, it was called this something in the eastern US that didn't grow there in california. His was philadelphus..
I look it up now, and I don't see my plant name for mock orange. (what?)
Maybe I just lived for a moment in time. True, but I'd like to get the latin right.
Anyway, Pitt tenuifolium is a plant of interest.