blister rust Meaning, Definition & Usage

  1. noun any of several diseases of pines caused by rust fungi of the genus Cronartium and marked by destructive invasion of bark and sapwood and producing blisters externally
    white-pine rust; white pine blister rust.
  2. noun fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host
    Cronartium ribicola.

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