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Abstract
The sexual state of Aspergillus parasiticus, a potent aflatoxin-producing fungus within section Flavi, is described. The production of nonostiolate ascocarps surrounded by a separate peridium within the stroma places the teleomorph in genus Petromyces. Petromyces parasiticus differs from P. alliaceus by its larger ascospores with finely tuberculate ornamentation. The anamorphic Aspergillus states of the two species differ in conidial head color and microscopic characters.
We appreciate the help of Patricia Eckel, who produced the Latin diagnosis, David Malloch, who reviewed the manuscript, Travis Walk and Michael Munster, who provided technical assistance, and Valerie Knowlton at the Center for Electron Microscopy (NC State University) for assistance with the SEM. This work was supported in part by the National Research Initiative of the USDA Cooperative State Research, Education and Extension Service to IC (grant number 2005-35319-16126).