Received this D. "Andromeda" as a bonus in a recent CP order. ( Thanks Cole! )
This plant is a cross between D. schizandra and D. prolifera.
There are a few different variations available from this crossing, with some looking more like the mother and others, taking on more of the father's traits.
This one (turns out there are actually six separate plants in that clump) starts out looking like D.prolifera when immature, with longer petioles, but does show some of the characteristic schizandra ridges on the leaves.
In time, the leaves grow out to about six inches in length, three inches in width, looking very much like a large schizandra plant with more elongated leaves...
They're being grown pretty much the same way you're growing them, but they don't seem to be picky, they even do well at the local reptile store where you can imagine just how high the temperatures get.
I did an impromptu leaf "cutting" (water propagation) with a leaf off of a D. "Andromeda" I got from Cole when the leaf declared its independence while I was unwrapping it from shipping. It looked like the leaf was an older one, so I wasn't sure if it was going to work or not. Apparently it was more resilient than I gave it credit for as a month plus a few days later I discovered two nubs sticking up from two different points on the leaf. I cut the leaf between the two growth points and set them on some moss in a small container that is sitting in just a thin layer of water, and covered to keep humidity up. I think, in my excitement, I might have moved them a little prematurely, but it has been ten days since I moved them to the moss, and both seem to be forgiving me with their first open leaves.