Ceratobasidiales is an order of basidiomycete fungi. The telemorphs, which have fruitbodies and produce spores are listed here, but many of the anamorphs, which do not reproduce sexually, are serious plant pathogens.- Category ID : 419016
Article from Wikipedia on the Western Underground Orchid from Australia which relies on the mycorrhiza of the fungus Thanatephorus gardneri to provide its energy.
Article from Wikipedia explaining how this plant pathogen does not produce spores but has a teleomorph, Thanatephorus cucumeris, which produces club-shaped basidia.