Aecidium compositarum var.

taraxaci (Kunze & J.C. Schmidt) Grev., (1824) Aecidium taraxaci Kunze & J.C. Schmidt, (1817) Dicaeoma dioicae (Magnus) Syd., (1922) Puccinia dioicae is a plant pathogen that causes rust on goldenrod.

It is common in Iceland, where it infects Taraxacum species and Carex capillaris.

Pycniospores and aeciospores are found on Taraxacum sp., and uredospores and teliospores are found on Carex capillaris.

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