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ARS Home » Research » Publications at this Location » Publication #89778


item Samuels, Gary

Submitted to: Mycologia
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/27/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary: Knowledge is lacking about fungi that are beneficial as agents of biological control. These fungi attack other fungi and are known as mycoparasites. Twelve species in the genus Hypomyces that occur on wood- rotting fungi were discovered and studied. Two of these species were previously unknown and are described as new to science form Estonia, Germany and the United States. For all species, descriptions and illustrations are presented of both the sexual and asexual states. Using the descriptions and illustrations it is now possible to identify these previously unknown fungi and to explore their potential usefulness in controlling wood-rotting fungi.

Technical Abstract: The aphyllophoricolous species of Hypomyces that have pallid, KOH negative perithecia and Cladobotryum anamorphs form the biggest subset within the genus. Twelve holomorphic and one asexual member of this group that occur in temperate regions of the northern hemisphere, are discussed. Hypomyces albidus, H. orthosporus and H. semitranslucens are the only members of the group previously known from Europe. In the present work the presence of H polyporinus, H. pseudopolyporinus, H. sympodiophorus and H. viridigriseus in Europe is confirmed. Two new species, H. corticicola and H. rostratus, are described from Europe. Cladobotryum stereicola, for which no teleomorph is known, is not the anamorph of H. sympodiophorus, as has been reported. The new combination Cladobotryum gamsii with a synonym, Helminthophora uniseptata, is a proposed for the anamorph of H. sympodiophorus. A previously unknown Cladobotryum anamorph is found associated with the teleomorph of H. tegillum in herbarium material from Central and South America. Hypomyces sibinae, previously known only from its type location in Indonesia, is reported form North America. The role of anamorphic vs. teleomorphic characters and the use of ascospore measurements in delimitation of species and identification of specimens is discussed in the group KOH-aphyllophoricolous Hypomyces.