 Also they have a rhizoidal or hypha-like vegetative system (hence the prefix "Hypho-").This group may be put alternatively at the phylum, class, subclass or order level, being referred to as Hyphochytriomycota, Hyphochytriomycetes (or Hyphochytrea), Hyphochytriomycetidae (or Hyphochytridae) and Hyphochytriales, respectively.The variants Hyphochytri"di"omycota and Hyphochytri"di"omycetes are also sometimes used, presumably by analogy to the Chytridiomycetes, or due to the perpetuation of a typographical error.