Sally--
The Begonia you pictured probably was from me--as Olga used to have this
and I got many starts. She simply called it "My Spanish Begonia" b/c someone Spanish gave it to me.
YES! tryly. this "Sophie Cecile"...(thanks for the name) grows like a weed.
I have several of them--as well the BIG one.
The Begonia that I have had for decades--also an "Angel Wing"--the one I always
keep on my front-door steps--also grows huge--but slower. It is the one that I have now had since 2005 (through endless propagation) but the leaves on it
have pretty smooth edges and are speckled with silvery dots--like someone
sprayed paint on it. The underside is meat-red--like the others.
I have shared this as well.
The third Begonia I have had forever is the "Beefsteak Begonia."
It also has been re-incarnated (from cuttings) many. many times.
I think it is the prettiest of all the ones i have. Had it since 2005.
Just this morning==I chopped the coiled, far stem of it back closer to the plant. Of course--I will try to root this one too--as it has a nice crown of leaves already. The Beefsteak roots easiest from leaf-stems just in water.
Got a few going--always available.
My guest bedroom is full of begonias--moany right on the bed.