''Melampsora hirculi'' is a

pathogen In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ ...

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 order of

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 ...

or rust fungi. It is causes disease in ''

Saxifraga hirculus ''Saxifraga hirculus'' is a species of saxifrage, commonly called marsh saxifrage, yellow marsh saxifrage, or bog saxifrage. It is a perennial herb with yellow flowers and red stem, 5–30 cm high, found on bog landscape. ''Saxifraga hircul ...

''.

References

Pucciniales Fungi described in 1902 Fungi of Iceland Fungus species {{fungus-plant-disease-stub