In my experience, almost all fleshy amaryllid seed might see fit to germinate before they are planted. I suspect that this gives them an advantage in their natural habitats where the window of opportunity for successful development is of limited size. Along with the genera that Jim S. mentions, the African strumaria, hessea, gethyllis(?), amaryllis, brunsvigia, cybistetes, boophane, etc. and the American hymenocallis and perhaps the Australasian proiphys and calostemma do the same thing. Holding the seeds under refrigeration helps slow down germination for awhile. I think they all benefit from being planted fresh, if their preferred moisture requirements are met. One thing that seems to be true about all of these seeds is that they need to be surface sown. In some cases there is chlorophyll in the seeds that supplies sustenance when there is sunlight available, I think. Best wishes, Dell