''Aecidium amaryllidis'' is a species of

fungus A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from th ...

in the

Pucciniales Rusts are plant diseases caused by pathogenic fungi of the order Pucciniales (previously known as Uredinales). An estimated 168 rust genera and approximately 7,000 species, more than half of which belong to the genus ''Puccinia'', are currently a ...

order. It was described by Syd., P. Syd and E.J.Butler in 1912.

References

Fungal plant pathogens and diseases Pucciniales Fungi described in 1912 Taxa named by Hans Sydow Taxa named by Paul Sydow {{fungus-plant-disease-stub