Fungi of the

order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood ...

Chytridiales, like other members of its division, may either have a monocentric

thallus Thallus (: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. A thallus usually names the entir ...

or a polycentric rhizomycelium. When the ribosomal genes of members classified in this order were first examined using

molecular A molecule is a group of two or more atoms that are held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions that satisfy this criterion. In quantum physics, organic chemistry, ...

techniques, it was discovered that the order contained some species that were not related. With the culture and characterization of '' Chytridium olla'', the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

of this order, the limits of the Chytridiales were established. The Chytridiales is now

monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ...

and species such as '' Polychytrium aggregatum'', '' Chytriomyces angularis'' and '' Cladochytrium replicatum'' have been transferred to other orders.

Genera ''incertae sedis''

* '' Achlyella'' * '' Achlyogeton'' * '' Coralliochytrium'' * '' Delfinachytrium'' * '' Pseudorhizidium'' * '' Dermomycoides'' * '' Dictyomorpha'' * '' Ichthyochytrium'' * '' Mucophilus'' * '' Myiophagus'' * '' Plasmophagus'' * '' Rhizidiocystis'' * '' Rhizosiphon'' * '' Sagittospora'' * '' Septolpidium'' * '' Sorokinocystis'' - ''Sorokinocystis mirabilis'' * '' Trematophlyctis''

References

Chytridiomycota Fungus orders Aquatic fungi {{Chytridiomycota-stub