Crassula ovata. ‘Gollum’ cultivar. “Jade plant”. Greenhouse staff could not identify, but I did. Got the large plant last season, and was able to break away three smaller ones, two shown here. (Zach took the third to work and summarily killed it.) It’s older, as the trunk is thick, but I’m not sure how old. There was no sign with it, so I grabbed a $20 price tag and stuck it in.  Seemed reasonable to me.