blister rust

blister rust

n. Any of several diseases of certain pine trees caused by fungi of the genus Cronartium, resulting in conspicuous blistering, dieback of affected areas, and often death of the tree.

blister rust

n (Plant Pathology) 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

blis′ter rust`

n. a disease, esp. of white pines, characterized by cankers and in the spring by blisters on the stems, caused by a rust fungus of the genus Cronartium. [1915–20]

Thesaurus

Noun	1.	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 externallywhite pine blister rust, white-pine rustrust - a plant disease that produces a reddish-brown discoloration of leaves and stems; caused by various rust fungi
	2.	blister rust - fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate hostCronartium ribicolarust fungus, rust - any of various fungi causing rust disease in plantsCronartium, genus Cronartium - rust fungi having aecia produced in raised or swollen sori and teliospores borne in waxy columns