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United States Department of Agriculture

Agricultural Research Service


Location: Systematic Mycology & Microbiology Laboratory

Title: Genera in the Bionectriaceae, Hypocreaceae, and Nectriaceae (Hypocreales) proposed for acceptance or rejection

item Rossman, Amy
item Seifert, Keith
item Samuels, Gary

Submitted to: IMA Fungus
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/23/2013
Publication Date: 4/4/2013
Citation: Rossman, A.Y., Seifert, K., Samuels, G.J. 2013. Genera in the Bionectriaceae, Hypocreaceae, and Nectriaceae (Hypocreales) proposed for acceptance or rejection. IMA Fungus. 4(1):41-51.

Interpretive Summary: Communication about fungi occurs primarily through the use of scientific names; thus, accurate scientific names are essential for discussing the control of fungal diseases or preventing the entry of invasive fungi into the U.S. Until recently two scientific names could be applied to one species of fungus depending on whether the sexual or asexual state was present. This was confusing. The rules for naming fungi have recently been changed to allow only one scientific name. In this research recommendations are made about which genus name should be used for a group of fungi. These recommendations are the result of worldwide discussion about the importance and frequency of use for each genus. This research will be used by plant pathologists, plant quarantine officials, and scientists who are concerned with these fungi.

Technical Abstract: With the recent changes concerning pleomorphic fungi in the new International Code of Nomenclature (ICN) for algae, fungi and plants, it is necessary to propose the acceptance of teleomorph-typified or anamorph-typified generic names that do not have priority or to propose the rejection of competing generic names. In addition, teleomorph-typified generic names must be proposed for rejection in favor of anamorph-typified names that have priority or the latter must be proposed for acceptance. Some pragmatic criteria used for deciding the acceptance or rejection of generic names include: the number of name changes required when one generic name is used over another, the clarity of the generic concept, their relative frequencies of use in the scientific literature, and a vote of interested mycologists. In this paper, eleven widely used generic names in three families of the Hypocreales are proposed for acceptance despite their lack of priority or widely used anamorph-typified names. Each pair of generic names is evaluated based on various criteria with a recommendation for the generic name to be used. Four teleomorph generic names that are younger than their corresponding anamorph generic names are proposed for use. Seven older anamorphic generic names are proposed for use over the younger associated teleomorph genera. Within the Bionectriaceae Clonostachys is recommended over Bionectria; in the Hypocreaceae Hypomyces is recommended over Cladobotryum, Sphaerostilbella is recommended over Gliocladium, and Trichoderma is recommended rather than Hypocrea; and in the Nectriaceae Actinostilbe is recommended over Lanatonectria, Cylindrocladiella is recommended over Nectricladiella, Fusarium is recommended over Gibberella, Gliocephalotrichum is recommended over Leuconectria, Gliocladiopsis is recommended over Glionectria, Nectria is recommended over Tubercularia, and Neonectria is recommended over Cylindrocarpon.

Last Modified: 10/18/2017
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