apple rust

noun

: any of several diseases caused by fungi of the genus Gymnosporangium

especially : a destructive fungal 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 Juneperus, especially a common red cedar (J. virginiana)

: the fungus causing apple rust

called also cedar apple rust, cedar rust

compare cedar apple

单词	apple rust
释义	apple rust noun 1 : any of several diseases caused by fungi of the genus Gymnosporangium especially : a destructive fungal 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 Juneperus, especially a common red cedar (J. virginiana) 2 : the fungus causing apple rust called also cedar apple rust, cedar rust compare cedar apple
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