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SUMMARYFour previously established genera of Thamnidiaceae and their recognized species are described and illustrated . Seven species are treated as follows: Chaetocladium -;onesii, C. brefeldii, Cokeromyces recurvatus, Mycotypha africana, M. microspora, M. poitrasii (anew combination based on Cokeromyces poitrasii), and Phascolomyces articuloms.Phascolomyces articuloms, the type species of Phascolomyces, was described in 1959 without the preservation of a nomenclatural type as required by the International Code of Botanical Nomenclature, and original material is unknown. A neotype specimen is designated ( preserved in RSA) for validation of the genus and species.

SUMMARYThe Thamnidiaceae is defin ed and six of the 13 genera included in the family by the authors are discussed. Thfrteen species are d escdbed and illustrated as follows

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