The Hypocrea schweinitzii Complex and Trichoderma sect. Longibrachiatum

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Hypocrea schweinitzii and related sexual and apparently strictly asexual Hypocrea (Trichoderma) species form a monophyletic lineage known as the H. schweinitzii complex. The anamorphs correspond to Trichoderma sects. Longibrachiatum and Saturnisporum. The H. schweinitzii complex includes six holomorphic (Hypocrea + Trichoderma) and four anamorphic (Trichoderma) species. The following new species are proposed: Hypocrea andinensis, H. orientalis, H. novaezelandiae, H. pseudokoningii and Trichoderma konilangbra.

Trichoderma parceramosum is found to be a later synonym of T. ghanense. The anamorph of H. pseudokoningii is T. pseudokoningii; the anamorph of H. schweinitzii is T. citrinoviride; the anamorph of H. jecorina is T. reesei. Hypocrea orientalis and T. longibrachiatum are genetically very close to each other, differing in 1-5 bp in the ITS region of the rDNA gene; they differ from each other in phenotypic characters. Trichoderma longibrachiatum is considered to be a clonal derivative of H. orientalis or a similar Hypocrea species. No teleomorphs are known for the following species: T. ghanense, T. konilanghra and T. saturnisporum. Keys to the species through their anamorphs and teleomorphs, and descriptions and illustrations are provided.

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