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.
References
External links Index Fungorum