genus Cronartium
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| Noun | 1. | genus Cronartium - rust fungi having aecia produced in raised or swollen sori and teliospores borne in waxy columns fungus genus - includes lichen genera family Melampsoraceae, Melampsoraceae - rust fungi Cronartium ribicola, blister rust - fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host |