Photopro, you probably know what this is already... I noticed it when I was doing the detail photos of my mystery orchid. It's volunteering underneath the orchid racks in my greenhouse. Maybe a philodendron of some sort? I've never seen them with foliage like this, though...
Looks like a begonia to me as well! There is a hybrid group called the "eyelash" begonias that have this appearance but are not this plant. Your's is almost certainly a species based on where you live. I'd check any local reference of begonia species.