page_title: Puccinia sessilis
hierarchical_section_title: Puccinia sessilis
caption_attribution_description: English: Close up of aecidia of Puccinia sessilis on Arum maculatum leaf
context_page_description: Puccinia sessilis is a fungal plant pathogen, also known as arum rust or ramsons rust. It commonly infects Arum maculatum and Allium ursinum causing yellow to orange circular patches on leaves. On the underside it produces raised orange aecia commonly covered in spores. It is common in Eurasia in the spring.
  Other species affected by this rust include Convallaria majalis, Dactylorhiza fuchsii, Dactylorhiza incarnata, Dactylorhiza majalis, Gymnadenia conopsea, Neottia ovata, Paris quadrifolia and Phalaris arundinacea
  A specialised form, Puccinia sessilis f.sp. narcissi-orchidacearum Boerema & Kesteren is a cause of rust in daffodils and various wild Orchidaceae.
context_section_description: Puccinia sessilis is a fungal plant pathogen, also known as arum rust or ramsons rust. It commonly infects Arum maculatum and Allium ursinum causing yellow to orange circular patches on leaves. On the underside it produces raised orange aecia commonly covered in spores. It is common in Eurasia in the spring.
  Other species affected by this rust include Convallaria majalis, Dactylorhiza fuchsii, Dactylorhiza incarnata, Dactylorhiza majalis, Gymnadenia conopsea, Neottia ovata, Paris quadrifolia and Phalaris arundinacea 
  A specialised form, Puccinia sessilis f.sp. narcissi-orchidacearum Boerema & Kesteren (Aecidium narcissi) is a cause of rust in daffodils (Narcissus) and various wild Orchidaceae.
caption: Close up of aecidia of Puccinia sessilis
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