Species

Uredinopsis pteridis

Uredinopsis pteridis. Photo: (c) Maria Morrow (formerly Friedman)，保留部分权利（CC BY-NC）, 由 Maria Morrow (formerly Friedman) 上传

iNaturalist • Wikipedia

Rusts are plant diseases caused by pathogenic fungi of the order Pucciniales (previously also known as Uredinales).

— Wikipedia

Sightings

Where in Humboldt

Discussion

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