
Begonia 'Helen Teupel', sold unlabeled
In an online begonia group that I frequent, not a day goes by that somebody doesn't post one or more photos of begonias they got from a friend, or purchased without any label, asking "what is it?" These are often rex hybrids, one of the groups I most often see offered without any names in garden centers. There's something about rex begonias that seduces people into buying them, but there's apparently also something about them that makes people lose their names.