Not even sure what to call these, needles, burrs, stickers (though they're not really stickers). This is in our front flower garden when we moved in and no idea what it is. It's a 5 ft tall bush.
Eurasian smoketree, Cotinus coggygria
I think you nailed it, thanks!
I'm on the fence as to how much I like it, but the wife wants me to cut it down. Told her not going to do it :)