Noun blister rust has 2 senses
  1. blister rust, white-pine rust, white pine blister rust - 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
    --1 is a kind of rust
  2. blister rust, Cronartium ribicola - fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host
    --2 is a kind of rust, rust fungus
    --2 is a member of Cronartium, genus Cronartium
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