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ABSTRACT
Nineteen species of Hypomyces (Ascomycotina, Hypocreales, Hypocreaceae) occur on members of the Aphyllophorales (Basidiomycotina, Hymenomycetes). Five new species, viz. H. amaurodermatis, H. lanceolatus, H. mycophilus, H. pergamenus, and H. sympodiophorus are described. Thirteen species have a proven anamorph. No anamorphs have been linked to six species. The anamorphs are hyphomycetes and have been previously distributed among the anamorph genera Arnoldiomyces, Cladobotryum, Dactylaria, Dactylium, Eurasina, Hansfordia, Moeszia, Pseudohansfordia, Septocylindrium, Sibirina, Sympodiophora, and Trichothecium. The patterns of branching, arrangement of conidiogenous loci, or the number and arrangement of conidia on the conidiogenous cell, which is a reflection of proliferation of the conidiogenous cell, are not significant as generic determinants when seen in the light of the apparent phylogenetic homogeneity of their teleomorphs. Most of the species that are anamorphs of Hypomyces are placed in Cladobotryum. The anamorph of H. chrysostomus is referred to Acremonium. Chlamydosporic synanamorphs (Blastotrichum) have been linked to six species.