| Noun | 1. | family Sclerotiniaceae - a fungus family of order Helotiales fungus family - includes lichen families Helotiales, order Helotiales - order of fungi having asci in a disk-shaped to goblet-shaped apothecium genus Sclerotinia - large genus of ascomycetous fungi including various destructive plant pathogens brown cup - a variety of sclerotinia |