Plant Health A

Host genus Fungal species Symptoms and notes
Abies Delphinella abietis Causes needle blight
Herpotrichia parasitica Parasitic on leaves (needles), causing browning of the tissues
Acer Pleuroceras pseudoplatani Causes irregular brown leaf spots on A. pseudoplatanus
Rhytisma acerinum Tar spot of leaves, primarily of A. pseudoplatanus
Sawadaea bicornis Powdery mildew of leaves
Stegonsporium acerophilum A weak parasite, only reported from exotic Acer species in a cultivated environment
Stegonsporium galeatum Presumably a weak pathogen, only reported from a cultivated exotic tree; possible threat to Acer pseudoplatanus
Stegonsporium opalus Apparently a weak parasite, not known from native trees
Stegonsporium protopyriforme Status unknown, a close relative of a weak pathogen. Only reported from a botanic garden and possibly introduced
Stegonsporium pseudopyriforme Status unknown, a close relative of a weak pathogen. Only reported from a botanic garden and possibly introduced
Stegonsporium pyriforme A weak pathogen causing death and dieback of Acer pseudoplatanus, especially of shaded branches
Agropyron Claviceps purpurea The ergot fungus, infecting inflorescences and forming sclerotia from modified seeds. Highly toxic
Anthoxanthum Claviceps purpurea As for that species on Agropyron
Anthriscus Puccinia chaerophylli Rust of leaves and petioles
Septoria anthrisci Causes leaf spots
Arum Puccinia sessilis Rust of leaves; uredinia and telia are on Phalaris
Astragalus Stigmatula astragali A biotrophic leaf parasite, probably not causing significant damage to the host
Thecaphora affinis Infects seed pods, destroying the seeds

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith