This Begonia has been a bit of a mystery for a while, but I have been leaning toward it being a wild hybrid between Begonia aborensis and Begonia burkilii.
One of its most unique features is the female flower’s ovary, which is covered in unusual bumps, unlike any species I’ve seen before. When it first bloomed though, the flowers had a strange morphology showing both male (stamen) and female (Stigma) structures on a single flower. Since it displayed male traits early on, I assumed it would eventually produce male flowers. However, after four months of constant blooming, it has only continued to produce female flowers, which suggests it may actually be dioecious like Begonia burkilii.
I’m still waiting on the larger variety to bloom—if it turns out to be dioecious as well, I’m hoping it will be male.