Any of several destructive diseases of pine trees caused by fungi of the genus Conartium, resulting in orange blisters on the bark and tips of branches.
- An invasive disease called blister rust has decimated whitebark pines in the Greater Yellowstone Ecosystem, and may well cause the trees to disappear altogether.
- The culprit, it turned out, was an alien fungus known as blister rust.
- Also, removing lower branches on white pines can prevent blister rust.
For editors and proofreaders
Syllabification: blis·ter rust
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