© Jens H. Petersen, Department of Systematic Botany, Biological Institute, University of Aarhus, Denmark

This outline of the Chytridiomycota is largely derived from F.K. Sparrow : Chytridiomycetes, Hyphochytridiomycetes (in Ainsworth, G.C., F.K. Sparrow & A.S. Sussman (eds.) : The Fungi, 1973).
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Genera containing lichenized species are coloured yellow
Genera containing mycorrhizal species are coloured green
Genera containing biotroph parasites species are coloured red
| Chytridiales | ||||
| Blastocladiales | ||||
| Monoblepharidales | ||||
| Chytridiales | ||||
| Achlyogetonaceae | ||||
| Achlyogeton, Bicricium, Septolpidium | ||||
| Chytridiaceae | ||||
| Amphicypellum, Catenochytridium, Chytridium, Chytriomyces, Cylindrochytridium, Endochytridium, Karlingiomyces, Macrochytrium, Nephrochytrium, Rhopalophlyctis, Truittella, Zygorhizidium | ||||
| Cladochytridiaceae | ||||
| Amoebochytrium, Cladochytrium, Coenomyces, Physocladia, Polychytrium | ||||
| Megachytridiaceae | ||||
| Megachytrium, Nowakowskiella, Septochytrium | ||||
| Olpidiaceae | ||||
| Dictymorpha, Olpidium, Olpidiomorpha, Plasmophagus, Pleotrachelus, Nucleophaga, Rozella, Sphaerita | ||||
| Phlyctidiaceae | ||||
| Aphanistris, Blyttiomyces, Coralliochytrium, Dangeardia, Diplophlyctis, Entophlyctis, Loborhiza, Mitochytridium, Phlyctidium, Phlyctochytrium, Phlyctorhiza, Physorhizophidium, Podochytrium, Rhizophydium, Rhizosiphon, Saccomyces, Scherffeliomyces, Septosperma | ||||
| Rhizidiaceae | ||||
| Asterophlyctis, Endocoenobium, Nowakowskia, Obelidium, Polyphagus, Rhizidium, Rhizoclosmatium, Rhizophlyctis, Siphonaria, Solutoparies, Sporophlyctidium, Sporophlyctis | ||||
| Synchytriaceae | ||||
| Endodesmidium, Micromyces, Synchytrium | ||||
| Blastocladiales | ||||
| Blastocladiaceae | ||||
| Allomyces, Blastocladia, Blastocladiella, Blastocladiopsis | ||||
| Catanariaceae | ||||
| Catenaria, Catenomyces, Catenophlyctis | ||||
| Coelomomycetaceae | ||||
| Coelomomyces | ||||
| Physodermataceae | ||||
| Physoderma | ||||
| Monoblepharidales | ||||
| Gonapodyaceae | ||||
| Gonapodya, Monoblepharella | ||||
| Monoblepharidaceae | ||||
| Monoblepharis | ||||