
Heterobasidiomycetes, including jelly fungi, smuts and rusts, are basidiomycetes with septate basidia. This contrasts them to homobasidiomycetes (alternatively called holobasidiomycetes), including most mushrooms and other Agaricomycetes, which have aseptate basidia. The division of all basidiomycetes between these two groups has been influential ...
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http://en.wikipedia.org/wiki/Heterobasidiomycetes

[
n] - category used in some classification systems for various basidiomycetous fungi including rusts and smuts
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http://www.webdictionary.co.uk/definition.php?query=Heterobasidiomycetes
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