Tropicals & Tender Perennials: Drag. Wng Beg. Fell Upside Down, 1 by birder17

birder17 wrote:
I am letting some cool spring breeze into the home today. The curtain knocked over my dragon wing begonia and plopped my plant upside down. It broke off 16" lengths-right up to the edge of the pot.
I have cut them with "bud nodes" and put them in tepid water for now.
Please advise me:
1. Should I let them "root" in water?
2. Should I "root" them in Pro-Mix seed starting soil?
3. Some other medium? If so, where can I purchase your recommendation?
4. Under a baggy?

I don't know what to do, and I have actually been putting off pruning this begonia due to lack of know how. So, now, I have to do something with it. I have really enjoyed this plant, and it has done quite well (slow, but well) in front of a big north window. The leaf shape is triangular and have two quite long ends and one short end. The leaves are quite red underneath and the flowers are reddish coral. If anyone knows the name of this plant, please tell me.
I will try to put a picture below.