This one is very similar to the Begonia Chivalry except for the grander leaf formation that is more on the star shape. The dark veins are more pronouns with the green marbled tones in between the veins.
This is currently a small plant. Looking forward for it to grow bigger as I understand it's a huge plant.
Begonia Common Names and Images
Here is the link where I had put together a list of all the begonias that I had come across. A database of all the different types & their characteristics. Please click on the link on the title above for the post.