apple rust

apple rust
noun
rust fungus causing rust spots on apples and pears etc
Hypernyms: ↑rust, ↑rust fungus
Member Holonyms: ↑Gymnosporangium, ↑genus Gymnosporangium

* * *

noun
1. : any of several diseases caused by fungi of the genus Gymnosporangium; especially : a destructive fungous disease especially of the apple but also attacking pears and quinces that is caused by a rust (G. juniperi-virginianae) having its pycnial and aecial stages on the leaves and fruit of the apple and the telial stage on species of Juniperus, especially a common red cedar (J. virginiana)
2. : the fungus causing apple rust — called also cedar apple rust, cedar rust; compare cedar apple

Useful english dictionary. 2012.

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  • cedar-apple rust — noun rust fungus causing rust spots on apples and pears etc • Syn: ↑apple rust, ↑Gymnosporangium juniperi virginianae • Hypernyms: ↑rust, ↑rust fungus • Member Holonyms: ↑Gymnosporangium, ↑ …   Useful english dictionary

  • cedar apple rust — noun see apple rust …   Useful english dictionary

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  • cedar-apple rust — noun Date: 1946 a gall producing disease especially of the apple caused by a rust fungus (Gymnosporangium juniperi virginianae) that completes the first part of its life cycle on the common red cedar (Juniperus virginiana) and the second on the… …   New Collegiate Dictionary

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  • cedar rust — noun : apple rust * * * cedar rust, 1. a destructive disease caused by a fungus that begins its life cycle on cedar trees and later spreads to apple trees. 2. the fungus that produce this disease …   Useful english dictionary

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