The Littonia have a thin covering over the seed which is probably what rotted to create the mold. The seed should be fine. It is always desirable to clean any sort of coating off the seed, if it has one, before sowing. Some seed coats have germination inhibitors in them that could delay germination. Ernie O'Byrne Northwest Garden Nursery 86813 Central Road Eugene OR 97402-9284USA Phone: 541 935-3915 FAX: 541 935-0863 Eugene, Oregon is USDA Zone 8a on the map, but we can only grow Zone 7 plants reliably. Member of NARGS, SRGC, RHS, American Primula Society, Meconopsis Group, Alpine-L, Arisaema-L, Hellebore Group