No clue as to it's ID, Alice. My helper rescues plants that her other clients are throwing away, and brings them to my garden because she doesn't have one of her own. It arrived last fall some time, I think. It grew nicely after I potted it up. And it has been blooming since about early December.
It is big, about 18in tall, I think and the flowers are larger than the little fiberous-rooted ones that are appearing in droves at the box stores now. It's in a 9-in. pot and seems very happy. The flower petals are about an inch across, and the biggest leaf is less than 5in. It had that long stem sticking out to one side which I broke off, and it looks and feels like a miniature cane begonia stem, with stiff sections and strong knobby nodes.
