Alan - that's my Favourite begonia - it's really an old fashioned "Cane-like" one, and I've had soooo much trouble getting them, but now I have 2.
Lee Ann - for some reason that I can't fathom, the piece I broke off to root has lost all it's leaves and is just now getting roots (baby ones!).
As soon as it's gotten enough roots I will send it to you. By then it should have some leaves again.
Y'know, it's been in water (without it going dry or anything) for about 1 1/2 months now...... so I hadn't forgotten you, I'm just stymied as to why the silly thing is going through this "stress" which it obviously is.