This article is a list of diseases of

Douglas-fir The Douglas fir (''Pseudotsuga menziesii'') is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine. There are three va ...

(''Pseudotsuga menziezii'').

Fungal diseases

{, class="wikitable" style="clear" ! colspan=2, Fungal diseases
, - , Annosus root disease , , ''

Heterobasidion annosum ''Heterobasidion annosum'' is a basidiomycete fungus in the family Bondarzewiaceae. It is considered to be the most economically important forest pathogen in the Northern Hemisphere. ''Heterobasidion annosum'' is widespread in forests in the Unit ...

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'' Spiniger meineckellum'' namorph , - , Armillaria root disease , , ''

Armillaria solidipes ''Armillaria ostoyae'' (synonym ''Armillaria solidipes'') is a species of fungus (mushroom), pathogenic to trees, in the family Physalacriaceae. In the western United States, it is the most common variant of the group of species under the na ...

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Armillaria ''Armillaria'' is a genus of fungi that includes the '' A. mellea'' species known as honey fungi that live on trees and woody shrubs. It includes about 10 species formerly categorized summarily as ''A. mellea''. ''Armillarias'' are long-l ...

'' spp. , - , Black stain root disease , , '' Leptographium wageneri var. pseudotsugae'' , - , Blue stain fungus , , '' Grosmannia clavigera'' , - , Bleeding sap rot , , '' Stereum sanguinolentum'' , - , Brown crumbly rot , , ''

Fomitopsis pinicola ''Fomitopsis pinicola'', is a stem decay fungus common on softwood and hardwood trees. Its conk (fruit body) is known as the red-belted conk. The species is common throughout temperate Europe and Asia. It is a decay fungus that serves as a smal ...

'' , - , Brown cubical rot , , ''

Laetiporus sulphureus ''Laetiporus sulphureus'' is a species of bracket fungus (fungi that grow on trees) found in Europe and North America. Its common names are crab-of-the-woods, sulphur polypore, sulphur shelf, and chicken-of-the-woods. Its fruit bodies grow as ...

'' , - , Brown trunk rot , , '' Fomitopsis officinalis'' , - , Charcoal root disease , , ''

Macrophomina phaseolina ''Macrophomina phaseolina'' is a Botryosphaeriaceae plant pathogen fungus that causes damping off, seedling blight, collar rot, stem rot, charcoal rot, basal stem rot, and root rot on many plant species. Hosts, symptoms, and signs One of the ...

'' , - , Conifer – aspen rust , , ''

Melampsora medusae ''Melampsora medusae'' is a fungus, fungal pathogen, causing a disease of woody plants. The infected trees' leaves turn yellowish-orange. The disease affects mostly conifers, e.g. the Douglas-fir, Western Larch, western larch, Tamarack Larch, tam ...

'' , - , Conifer – cottonwood rust , , ''

Melampsora occidentalis ''Melampsora occidentalis'' is a plant pathogen. It is a macrocyclic, heteroecious rust that alternates between poplars and conifers. References External links Melampsora occidentalis Fungal plant pathogens and diseases Pucciniales Fungi ...

'' , - , Cytospora canker , , '' Leucostoma kunzei''
'' Cytospora kunzei'' namorph
'' Valsa abietis''
'' Cytospora abietis'' namorph , - , Damping-off , , ''

Fusarium ''Fusarium'' is a large genus of filamentous fungi, part of a group often referred to as hyphomycetes, widely distributed in soil and associated with plants. Most species are harmless saprobes, and are relatively abundant members of the soil mi ...

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Phytophthora ''Phytophthora'' (from Greek language, Greek (''phytón''), "plant" and (), "destruction"; "the plant-destroyer") is a genus of plant-damaging oomycetes (water molds), whose member species are capable of causing enormous economic losses on cro ...

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Pythium ''Pythium'' is a genus of parasitic oomycetes. They were formerly classified as fungi. Most species are plant parasites, but ''Pythium insidiosum'' is an important pathogen of animals, causing pythiosis. The feet of the fungus gnat are frequent ...

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Rhizoctonia ''Rhizoctonia'' is a genus of fungi in the order Cantharellales. Species form thin, effused, corticioid basidiocarps (fruit bodies), but are most frequently found in their sterile, anamorphic state. ''Rhizoctonia'' species are saprotrophic, but ...

'' spp. , - , Dermea canker , , ''

Dermea pseudotsugae ''Dermea pseudotsugae'' is a plant pathogen. References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases Dermateaceae {{fungus-plant-disease-stub ...

'' , - , Dime canker , , '' Durandiella pseudotsugae'' , - , Fusarium hypocotyl rot , , ''

Fusarium oxysporum ''Fusarium oxysporum'' (Schlecht as emended by Snyder and Hansen), an ascomycete fungus, comprises all the species, varieties and forms recognized by Wollenweber and Reinking within an infrageneric grouping called section Elegans. It is part of ...

'' , - , Gray-brown sap rot , , '' Cryptoporus volvatus'' , - , Gray mold , , ''

Botrytis cinerea ''Botrytis cinerea'' is a necrotrophic fungus that affects many plant species, although its most notable hosts may be wine grapes. In viticulture, it is commonly known as "botrytis bunch rot"; in horticulture, it is usually called "grey mould" or ...

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'' Botryotinia fuckelinana'' eleomorph , - , Laminated root rot , , ''

Phellinus weirii ''Phellinus weirii'' is a plant pathogen causing laminated root rot in certain conifers, typically Douglas-fir and western redcedar. It is widespread in the Douglas-fir growing regions of British Columbia, Washington and Oregon Oregon ...

'' , - , Phoma seedling blight , , '' Phoma eupyrena'' , - , Phomopsis canker , , '' Diaporthe lokoyae''
'' Phomopsis lokoyae'' namorph , - , Phytophthora root rot , , ''

'' spp. , - , Pitted sap rot , , '' Trichaptum abietinum'' , - , Red-brown butt rot , , ''

Phaeolus schweinitzii ''Phaeolus schweinitzii'', commonly known as velvet-top fungus, dyer's polypore, dyer's mazegill, or pine dye polypore, is a fungal plant pathogen that causes butt rot on conifers such as Douglas-fir, spruce, fir, hemlock, pine, and larch. ''P. ...

'' , - , Red ring rot , , ''

Phellinus pini ''Phellinus pini'' (current name: ''Porodaedalea pini'' (Brot.) Murrill 1905) is a fungal plant pathogen that causes tree disease commonly known as "red ring rot" or "white speck". This disease, extremely common in the conifers of North America, ...

'' , - , Rhabdocline needle cast , , ''

Rhabdocline pseudotsugae ''Rhabdocline pseudotsugae'' is a fungal plant pathogen. The pathogen, along with '' Rhabdocline weirii'' causes Rhabdocline needlecast; ''R. weirii'' only affects Douglas-fir trees. The disease causes the needles of the tree to discolor and eve ...

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Rhabdocline weirii Rhabdocline weirii is a fungal plant pathogen. The pathogen, along with ''Rhabdocline pseudotsugae'', causes Rhabdocline needlecast; ''R. weirii'' only affects Douglas-fir The Douglas fir (''Pseudotsuga menziesii'') is an evergreen conifer ...

'' , - , Rhizina root disease , , ''

Rhizina undulata ''Rhizina undulata'', commonly known as the doughnut fungus or the pine firefungus, is a species of fungus in the family Rhizinaceae. The fruit bodies of the fungus are dark purple brown with a bright yellow margin, crust-like and attached to the ...

'' , - , Rose fomes rot , , '' Fomitopsis cajanderi'' , - , Rust-red stringy white rot , , ''

Echinodontium tinctorium ''Echinodontium tinctorium'' is a species of fungus in the family Echinodontiaceae. A plant pathogen, it is common name, commonly known as the Indian paint fungus. Found on tree species such as grand fir (and indicating a rotten core), it can be ...

'' , - , Sclerophoma dieback , , '' Sydowia polyspora''
'' Sclerophoma pythiophila'' namorph= '' Sclerophoma semenospora'' namorph , - , Snow blight , , '' Phacidium abietis'' , - , Snow/needle blight , , ''

Phacidium infestans ''Phacidium infestans'' is a fungal plant pathogen infecting Douglas-firs commonly known as snow/needle blight. References External links Index FungorumUSDA ARS Fungal Database Fungal tree pathogens and diseases Helotiales {{ ...

'' , - , Sparrasis root rot , , '' Sparrasis crispa'' , - , Stringy butt rot , , '' Perenniporia subacida'' , - , Swiss needle cast , , '' Phaeocryptopus gaeumannii'' , - , Tomentosus root rot , , '' Inonotus tomentosus'' , - , Upper stem canker , , '' Phoma eupyrena''
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Fusarium avenaceum ''Gibberella avenacea'' is a fungal plant pathogen Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organ ...

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Fusarium sambucinum ''Gibberella pulicaris'' is a fungus, fungal plant pathogen infecting several hosts including List of potato diseases, potato, List of strawberry diseases, strawberry, List of hop diseases, hop, List of alfalfa diseases, alfalfa and List of Dougl ...

'' , - , White stringy rot , , '' Resinicium bicolor''

References

Common Names of Diseases, The American Phytopathological Society

Conifer pathogens and diseases Pseudotsuga