Thanks, bboy, I knew that was true for Crataegus, but wasn't sure about this. That is easy to remember.

Yep, Philadelphus coronarius or some cultivar thereof :-) This is a suckering shrub (like lilacs), so relatively easy to separate exterior young suckers/shoots to start new plants. There was a mock orange like this planted outside my bedroom window when I was growing up.....the wonderful fragrance - strongest on a warm evening - is very evocative and triggers all sort of pleasant memories of my childhood :-)

i call it sedum ... and the usual standard is autumn joy, though there are variations on the theme .. never fert it.. it probably never needs water ... and it could be broken into about 100 pieces that would probably all live ... and its an incredible bee magnet ... ken https://www.google.com/search?q=autumn+joy+sedum&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMI_6C926XtxgIVgp6ACh3PYwzM&biw=903&bih=745&dpr=0.9

It's a Polygala. I don't know them personally but compare with P myrtifolia.