|Calafate rust growing on the shrub Beriberis microphylla in Chile.|
Aecidium magellanicum, commonly known as the calafate rust, is a species of rust fungi. This fungus can cause a growth defect known as a witches broom, an excessive growth of stems from a single point on a branch. The species is known to infect the evergreen shrub Berberis buxifolia in Argentina and Chile.
- Hernández JR, Hennen JF. (2003). "Rust fungi causing galls, witches' brooms, and other abnormal plant growths in northwestern Argentina". Mycologia 95(4): 728–755.
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