Question: Information:  - Hydnum is a genus of fungi in the Hydnaceae family. They are notable for their unusual spore-bearing structures of teeth rather than gills. The best known are the edible species "Hydnum repandum" and "H. rufescens". The word is derived from "(h)udnon"/, an Ancient Greek word for truffle. The white or buff "Hydnum repandum" has a spore scatterer of still another shape. The smooth cap grows as wide as 8 inches across. The stem is off-center and is less than 2 inches long. "Hydnum" has many brittle, white teeth from which the spores drop. The mushrooms of the "Hydnum" group grow both on ground and on wood. Some species have teeth which hang from ascending branches, while other species have teeth which project downwards from the undersurfaces of dead wood. Most "Hydnum" are safe to eat.  - The Hydnaceae are a family of fungi in the order Cantharellales. Originally the family encompassed all species of fungi that produced basidiocarps (fruit bodies) having a hymenium (spore-bearing surface) consisting of slender, downward-hanging tapering extensions referred to as "spines" or "teeth", whether they were related or not. This artificial but often useful grouping is now more generally called the hydnoid or tooth fungi. In the strict, modern sense, the Hydnaceae are limited to the genus "Hydnum" and related genera, with basidiocarps having a toothed or poroid hymenium. Species in the family are ectomycorrhizal, forming a mutually beneficial relationship with the roots of trees and other plants. "Hydnum repandum" (the hedgehog fungus) is an edible species, commercially collected in some countries and often marketed under the French name "pied de mouton".  - The Gomphaceae are a diverse family of fungi belonging in what is classically known as the Phallales or cladistically as the gomphoid-phalloid clade. The family has 13 genera and 287 species.  - The Cantharellaceae are a family of fungi in the order Cantharellales. The family contains the chanterelles and related species, a group of fungi that superficially resemble agarics (gilled mushrooms) but have smooth, wrinkled, or gill-like hymenophores (spore-bearing undersurfaces). Species in the family are ectomycorrhizal, forming a mutually beneficial relationship with the roots of trees and other plants. Many of the Cantharellaceae, including the chanterelle ("Cantharellus cibarius"), the Pacific golden chanterelle ("Cantharellus formosus"), the horn of plenty ("Craterellus cornucopioides"), and the trumpet chanterelle ("Craterellus tubaeformis"), are not only edible, but are collected and marketed internationally on a commercial scale.  - The Phallales are an order of fungi in the subclass Phallomycetidae. The order contains three families: the Claustulaceae, the Gomphaceae, and the Phallaceae, which, according to a 2008 estimate, collectively contain 26 genera and 88 species.  - The Cantharellales are an order of fungi in the class Agaricomycetes. The order includes not only the chanterelles (Cantharellaceae), but also some of the tooth fungi (Hydnaceae), clavarioid fungi (Aphelariaceae and Clavulinaceae), and corticioid fungi (Botryobasidiaceae). Species within the order are variously ectomycorrhizal, saprotrophic, associated with orchids, or facultative plant pathogens. Those of economic importance include edible and commercially collected "Cantharellus", "Craterellus", and "Hydnum" species as well as crop pathogens in the genera "Ceratobasidium" and "Thanatephorus" ("Rhizoctonia").  - Cantharellus is a genus of popular edible mushrooms, commonly known as chanterelles. They are mycorrhizal fungi, meaning they form symbiotic associations with plants, making them very difficult to cultivate. Caution must be used when identifying chanterelles for consumption due to lookalikes, such as the Jack-O-Lantern species ("Omphalotus olearius" and others), which can make a person very ill. Despite this, chanterelles are one of the most recognized and harvested groups of edible mushrooms.  - The Agaricomycetes are a class of fungi in the division Basidiomycota. The taxon is roughly identical to that defined for the Homobasidiomycetes (alternatively called holobasidiomycetes) by Hibbett & Thorn, with the inclusion of Auriculariales and Sebacinales. It includes not only mushroom-forming fungi, but also most species placed in the deprecated taxa Gasteromycetes and Homobasidiomycetes. Within the subdivision Agaricomycotina, which already excludes the smut and rust fungi, the Agaricomycetes can be further defined by the exclusion of the classes Tremellomycetes and Dacrymycetes, which are generally considered to be jelly fungi. However, a few former "jelly fungi", such as "Auricularia", are classified in the Agaricomycetes. According to a 2008 estimate, Agaricomycetes include 17 orders, 100 families, 1147 genera, and about 21000 species. Modern molecular phylogenetic analyses have been since used to help define several new orders in the Agaricomycetes: Amylocorticiales, Jaapiales, Stereopsidales, and Lepidostromatales.  - The Aphelariaceae are a family of fungi in the order Cantharellales. The family contains a small group of tropical and subtropical clavarioid fungi, but is not well characterized and has not been the subject of published research.  - The Clavulinaceae are a family of fungi in the order Cantharellales. The family is not well defined, but currently comprises species of clavarioid (club and coral) fungi as well as some corticioid (crust- and patch-forming) fungi. These species are nutritionally diverse, some being ectomycorrhizal, others wood-rotting saprotrophs, others lichenized, and yet others lichenicolous (growing on or parasitizing lichens).  - Phallaceae is a family of fungi, commonly known as stinkhorn mushrooms, within the order Phallales. Stinkhorns have a worldwide distribution, but are especially prevalent in tropical regions. They are known for their foul-smelling, sticky spore masses, or gleba, borne on the end of a stalk called the receptaculum. The characteristic fruiting-body structure, a single, unbranched receptaculum with an externally attached gleba on the upper part, distinguishes the Phallaceae from other families in the Phalalles. The spore mass typically smells of carrion or dung, and attracts flies and other insects to help disperse the spores. Although there is great diversity in body structure shape among the various genera, all species in the Phallaceae begin their development as oval or round structures known as "eggs". According to a 2008 estimate, the family contains 21 genera and 77 species.  - Phallomycetidae is a subclass of the class Agaricomycetes of fungi.  - The Botryobasidiaceae are a family of fungi in the order Cantharellales. The family contains a group of corticioid fungi that form thin, web-like basidiocarps. Some species form asexual anamorphs producing chlamydospores. All are believed to be wood-rotting or litter-rotting saprotrophs. None is known to be of any economic importance.  - Craterellus is a genus of generally edible fungi similar to the closely related chanterelles, with some new species recently moved from the latter to the former. Both groups lack true gills on the underside of their caps, though they often have gill-like wrinkles and ridges.  - The Gomphales are an order of basidiomycete fungi . Some or all families belonging to Gomphales have been sometimes included in the order Phallales ( and vice versa - they are also sometimes treated as synonyms ) , the now - obsolete Ramariaceae was also previously included in Cantharellales . Recent phylogenetic analyses include in Gomphales the families of the original description of the order by W. Jülich , with addition of Clavariadelphaceae . According to one 2008 estimate , the Gomphales contain 18 genera and 336 species .    Given the information, choose the subject and object entities that have the relation of 'parent taxon'.
Answer:
gomphales , phallomycetidae