Another fall-blooming snowdrop is Galanthus peshmenii. It increases well for me (under a tree) but doesn't flower much. It is possible that the correspondent's fall snowdrop got mixed into a shipment of wild-collected snowdrop bulbs from Turkey at some time in the past. (I must add that I got G. peshmenii from an irreproachable cultivated source!) Last year I was given a snowdrop that flowers in early December and keys out to Galanthus nivalis, which a friend found in an old garden in his neighborhood. Jane McGary Portland, Oregon, USA