'm still clueless on the ID of this plant. Realized I have another clue though. Almost every stalk made a flower, and every stalk that did make a flower has died off, leaving only basal growth. Callisia repens is just getting longer and longer, as usual.
I've added a bunch of cuttings of other stuff to this pot, but you can see the mystery Callisia is all new basal growth, nothing long is left of it. (The longer pieces of naked stem are Portulaca.) A couple months ago, long pieces were growing up the hanging arms like vines, and other pieces were dangling 6+ inches over the sides. It did that last year and I thought I let it get too dry. I paid more attention this time.
When you get a minute where you can look without your eyeballs freezing, curious what yours is doing outside after this cold snap, Ginger? I'll try to go by the 'garden center' where it's growing all over the floor and pots and check up on it there.