Thanks FrozeBudd. It is a big job moving everything outside for summer and back indoors for winter. My basement runneth over as I try to organize them into their cubby holes just to keep them alive. I still have about 20 extra large pots to move indoors before Monday (our first freeze). The plants get bigger, new plants come in faster than old ones check out, propagation makes things worse as space is limited, and I am another year older. UGH! This is from last December Confetti on left, Hugh McLaughlin on right. Not sure what is in the back. Amelia blooming, Cowardly Lion (striped rhizo), and it looks like Big Mac (glossy green) Helen Teupel (purple with silver edges) and some unknown silver curl. Flirty Girl (a seedling from Ozzie Johnson who is a member of our begonia club) Jack Black with a cluster of blooms My Special Angel (polka dot cane), Taconite (large dark green leaves), and U450 or U540 (seems like the tag was mislabeled) is the silver leaf with dark veins. rexes from Walmart or Lowe's (Exotic Angel nursery) Proud Mary various begonias I propagated for fun.

I would move it outdoors for summer. Bright light, warmth, and humidity makes a huge difference. Here is mine from years ago when I grew it from the nursery on our front porch (Atlanta area). But if you had a public greenhouse (Atlanta Botanical Garden) then you could grow it to 12 feet tall or taller. Here is their giant earlier this month. The begonia in front is obliqua and about four feet tall.

The node with the bud will not grow a new leaf but rather a new branch BUT only when the top growing point is removed. The nodes that had blooms will not grow any new branches so you are correct on this aspect. I would remove any leaves you do not like, trim slightly misshapen leaves if that is what you want to do. Usually starting new plants from cuttings is a way to rejuvenate the plant as new stems should come up from the ground from the mother plant. I often remove every leaf off a plant if the leaves are torn, infected, or just downright ugly - hydrangeas, begonias, and most recently a Chionanthus. The plant will respond with a new flush of growth if it wants to live and most plants want to continue living. My maculata seed grown plant had a massive outbreak of mildew this winter so a lot of leaf drop on their own, some branch die back, and I removed the worst of the leaves. I sprayed the entire plant twice during winter with Orchard Spray (a combo fungicide/pesticide but I use it mainly for mildew control). The plant now is outdoors for summer and starting to bloom. It is probably 3 feet tall now. PS - I wouldn't use a humidifier as this can help spread mildew. Here is one of my seed grown maculata plants with blooms just starting. I had to cut off a few dead branches due to mildew attack. Last September, a seed grown hybrid with maculata as the mother plant. Dec 30, 2019 in front a window in the basement.

These types are classed as cane stemmed begonias and there is a bunch of different kinds. But the depth of coloring of the flowers of this one might help narrow it down to a specific variety comparatively quickly.