a crushed leaf... for a brief second or two.. might smell like rootbeer but sometimes not ... but all 3 will smell the same.. if the same.. rootbeer or not... ken

Yup, agreed on the ID. You could probably take cuttings a few nodes long & pot them back into mother plant's pot, to make it look even more full & lush.

There are definitely seedlings LOL. It's not going send a stolon 150' across the garden, especially a couple years after it was cut down! In fact I spotted a seedling yesterday and stopped myself from zapping it with glyphosate. I thought, 'heck, that gardenweb thread reminded me of how much I miss that plant'. I might leave it! The foliage does smell weird but only if you crush or rub it. It's not like Zanthoxylum simulans where on a hot day you can literally small the whole plant, and at some distance too. Toona 'Flamingo' is the same, but it seems more "smellable" on still humid nights. Like a strange mix beef and onion soup and burning rubber! 😱 FWIW pretty much all my camellias self seed now. Not to humble brag but I have high quality loamy soil so that probably helps these East Asian plants feel at home.

Thanks, ladies. That was my opinion, as well. but I'd only ever seen it growing out of old cracks and forming dense mats, as in the pic. I wonder how it got there. I haven't seen any locally. It's apparent loci would be consistant with having been in with the medium it came in, but can it propagate from bits of roots after 3-4 years? Can't see that.