orange rust


nounPlant Pathology.
  1. a disease of blackberries and raspberries, characterized by an orange, powdery mass of spores on the undersides of the leaves and stunted, misshapen foliage, caused by a rust fungus, Gymnoconia interstitialis.

Words Nearby orange rust

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024