''Melampsora pulcherrima'' is a Mediterranean plant pathogen. It is a

rust Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO(OH ...

that infects ''

Mercurialis annua ''Mercurialis annua'' is a species of flowering plant in the spurge family Euphorbiaceae known by the common name annual mercury or (rarely) French mercury. It is native to Europe, North Africa, and the Middle East but it is known on many other c ...

'', causing

galls Galls (from the Latin , 'oak-apple') or ''cecidia'' (from the Greek , anything gushing out) are a kind of swelling growth on the external tissues of plants, fungi, or animals. Plant galls are abnormal outgrowths of plant tissues, similar to be ...

pycnia Pycniospores are a type of spore in fungi. They are produced in special cup-like structures called pycnia or pynidia. Almost all fungi reproduce asexually with the production of spores. Spores may be colorless, green, yellow, orange, red, brown or ...

, and aecia over leaves and stem in winter, seen as a golden yellow swelling over several centimeters, as well as '' Populus alba'', causing uredia and telia on leaves from spring until autumn.

References

External links

Melampsora Pulcherrima
i
Plant Parasites of Europe: leafminers, galls and fungi

Penetration and earlycolonization in basidiospore-derived infection ofMelampsora pulcherrima (Bub.)Maire on Mercurialis annua L.
Pucciniales Fungi described in 1914 Fungi of Europe Fungal plant pathogens and diseases Taxa named by René Maire {{fungus-plant-disease-stub