blister rust

American  

noun

Plant Pathology.

1. a disease, especially of white pines, characterized by cankers and in the spring by blisters on the stems, caused by a rust fungus of the genus Cronartium.

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blister rust British  

noun

1. a disease of certain pines caused by rust fungi of the genus Cronartium , causing swellings on the bark from which orange masses of spores are released

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Etymology

Origin of blister rust

First recorded in 1915–20

Example Sentences

A nonnative fungus - white pine blister rust - has been killing whitebark pines for a century and they’ve been largely wiped out in areas.

From Washington Times • Dec. 14, 2022

But, in 1911, the federal government banned black currants, which carried white pine blister rust, a fungus that infected white pines and presented a threat to the timber industry.

From New York Times • Mar. 11, 2022

Many have also been killed by white pine blister rust, a fungus introduced from Europe a century ago.

From Los Angeles Times • Nov. 18, 2019

Seedlings generally fight losing battles against thick forest over-stories and other competition, compounded by attacks from a non-native fungus called blister rust.

From Seattle Times • Mar. 26, 2018

The white pine blister rust was introduced into America about 35 years ago, and has since become widespread and highly destructive of both old trees and young growth.

From Forest Trees of Illinois How to Know Them by Fuller George D.