I’ve had this one amaryllis among my houseplants for years. Maybe decades. I can’t remember where I got it and have no idea what its variety name is. It’s a basic bright scarlet. No stripes or two-tone effects.
I vaguely recall it blooming long ago and trying various techniques to get it to rebloom — putting it outside for the summer, withholding water when leaves started yellowing, etc. What happened was the bulb split into three smaller bulbs. I potted them individually and grew them on. Sometimes one of them surprised me and put out a bloom stalk, but the bulbs remained small.
I must have figured out the proper treatment somewhere along the line. One bulb, which spent most of the time in an east window, got bigger and fatter. It has bloomed reliably, and this year (after a splendid growth of leaves last spring and summer) decided to form not one, but two bloom stalks. What is strange is that it never had the necessary period of dormancy first. A couple of leaves started to yellow last fall, so I reduced watering in preparation for dormancy during the winter. Instead, the plant sprouted a bud! So I resumed watering and moved it to a south window. A few weeks later, a second bud emerged. Thrills and excitement!
Here is a series of pictures from bud to bloom, January 26th to February 2nd.