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Selected Disease Organisms Grouped by Common Signs or Symptoms

Samples of diseased material often have distinct characteristics that can help identify or at least narrow down the list of causal organisms. The following lists are presented as an aid to identification based on commonly observed, easily recognizable signs and symptoms.

Brown cubical decay	Cryptoporus volvatus Fomitopsis officinalis Fomitopsis pinicola Gleophyllum sepiarium Laetiporus sulphureus Neolentinus kaufmannii Phaeolus schweinitzii Piptoporus betulinus Postia sericeomollis
Laminated decay	Ceriporiopsis rivulosa Echinodontium tinctorium Perenniporia subacida Phellinus weirii Pholiota populnea Spongipellis delectans
White pocket rot	Hericium abietis Heterobasidion annosum Inonotus tomentosus Perenniporia subacida Phellinus pini Trichaptum abietinum
Mycelial mats	Armillaria spp. Fomes fomentarius Fomitopsis officinalis Fomitopsis pinicola Gleophyllum sepiarium Laetiporus sulphureus Perenniporia subacida Piptoporus betulinus Postia sericeomollis Stereum sanguinolentum
Stringy decay	Armillaria spp. Echinodontium tinctorium Hericium abietis Heterobasidion annosum Spongipellis delectans
Soft or spongy decay	Armillaria spp. Fomes fomentarius Ganoderma applanatum Heterobasidion annosum Inonotus obliquus Perenniporia subacida Phellinus igniarius Phellinus tremulae Trichaptum abietinum Veluticeps fimbriata