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Fungi: Basidiomycota: Pucciniomycetes: Pucciniales: Pucciniastraceae: Hyalopsora aspidiotus (Peck) Magnus, 1901

Hyalopsora aspidiotus – Oak fern rust

Synonyms: Hyalopsora polypodii-dryopteridis, Melampsorella aspidiotis, Uredo aspidiotus, Uredo filicum, Uredo polypodii.

Common name: oak fern rust.

Photos of this mushroom from the area of St. Petersburg, Russia

Rusty underside of a leaf of northern oak fern Gymnocarpium dryopteris affected by a fungal disease fir-oak-fern rust (<B>Hyalopsora aspidiotus</B>) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-14.htm">July 14, 2017</A>
LinkRusty underside of a leaf of northern oak fern Gymnocarpium dryopteris affected by a fungal disease fir-oak-fern rust (Hyalopsora aspidiotus) near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
Fir-oak-fern rust (<B>Hyalopsora aspidiotus</B>) fungus on a leaf of northern oak fern Gymnocarpium dryopteris near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, <A HREF="../date-en/2017-07-14.htm">July 14, 2017</A>
LinkFir-oak-fern rust (Hyalopsora aspidiotus) fungus on a leaf of northern oak fern Gymnocarpium dryopteris near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017

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Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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