1. blister rust, white-pine rust, white pine blister rust, rust

usage: 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

2. blister rust, Cronartium ribicola, rust, rust fungus

usage: fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host

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