These come up in my yard every year. I did not plant them. One of the pictures under lycoris squamigera looks like them, too (Ulrich's)...but I think they are really amaryllis belladonna. My yard was just a part of a ranch before we built our house, so maybe someone had thrown out plants long ago. I get other surprises, too, such as pink calla lillies, etc. My naked ladies are a very light pink, and they smell like bubble gum. They seem to divide well, and my husband has moved them into pots or in different areas without any trouble. It was a big surprise for us to see all the leaves come, die, and then to get the 'ladies' visit in the summer.