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The Tilletiales is an order of fungi that are parasitic on grasses. These fungi are characterized by their ballistospore-forming nature, meaning their spores are forcibly discharged. Primary basidiospores can conjugate, forming a dikaryon that is capable of infecting host plants. Genera within this order include Tilletia, known for causing bunt diseases in cereal grains, and Conidiosporomyces. The family Tilletiaceae, which includes the genus Tilletia, is distinguished by its simple promycelium bearing spores in an apical cluster. Some species within this family are economically important parasites of cultivated plants.123

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