Diseases of Douglas-fir
(Pseudotsuga menziezii [Mirb.] Franco)

E. Hansen and F. Tainter, primary collators

FUNGAL DISEASES

Annosus root disease

Heterobasidion annosum (Fr.) Bref.

    Spiniger meineckellum (A. Olson) Stalpers [anamorph]

Armillaria root disease

Armillaria ostoyae (Romagnesi) Herink

Armillaria spp.

Black stain root disease

Leptographium wageneri (Kendrick) M.J. Wingfield var. pseudotsugae T.C. Harrington & F.W. Cobb

Bleeding sap rot

Stereum sanguinolentum (Albertini & Schwein.:Fr.) Fr.

Brown crumbly rot

Fomitopsis pinicola (Sw.:Fr.) P. Karst

Brown cubical rot

Laetiporus sulphureus (Bull.:Fr.) Murrill

Brown trunk rot

Fomitopsis officinalis (Villars:Fr.) Bondartsev & Singer

Charcoal root disease

Macrophomina phaseolina (Maub.) Asby

Conifer - aspen rust

Melampsora medusae Thuem.

Conifer - cottonwood rust

Melampsora occidentalis H. Jacks.

Cytospora canker

Leucostoma kunzei (Fr.:Fr.) Munk

    Cytospora kunzei Sacc. [anamorph]

Valsa abietis (Fr.:Fr.) Fr.

    Cytospora abietis Sacc. [anamorph]

Damping-off

Fusarium spp.

Phytophthora spp.

Pythium spp.

Rhizoctonia spp.

Dermea canker

Dermea pseudotsugae Funk & Sutton

Dime canker

Durandiella pseudotsugae Funk & Sutton

Fusarium hypocotyl rot

Fusarium oxysporum (Schl.) emend. Synd. & Hans.

Gray-brown sap rot

Cryptoporus volvatus (Peck) Schear

Gray mold

Botrytis cinerea Pers.:Fr.

    Botryotinia fuckelinana (deBary) Whetzel [teleomorph]

Laminated root rot

Phellinus weirii (Murrill) R.L. Gilbertson

Phoma seedling blight

Phoma eupyrena Sacc.

Phomopsis canker

Diaporthe lokoyae Funk

    Phomopsis lokoyae Hahn [anamorph]

Phytophthora root rot

Phytophthora spp.

Pitted sap rot

Trichaptum abietinum (Dickson:Fr.) Ryvarden

Red-brown butt rot

Phaeolus schweinitzii (Fr.:Fr.) Pat.

Red ring rot

Phellinus pini (Thore:Fr.) A. Ames

Rhabdocline needle cast

Rhabdocline pseudotsugae Syd.

Rhabdocline weirii A.K. Parker & J. Reid

Rhizina root disease

Rhizina undulata Fr.:Fr.

Rose fomes rot

Fomitopsis cajanderi (P. Karst.) Kotlaba & Pouzar

Rust-red stringy white rot

Echinodontium tinctorium (Ellis & Everh.) Ellis & Everh.

Sclerophoma dieback

Sydowia polyspora (Bref. & Tav.) E. Muller

    Sclerophoma pythiophila (Corda) Höhn. [anamorph]

    = Sclerophoma semenospora Funk [anamorph]

Snow blight

Phacidium abietis (Dearn.) Reid & Cain

Sparrasis root rot

Sparrasis crispa (Wolfen:Fr.) Fr.

Stringy butt rot

Perenniporia subacida (Peck) Donk

Swiss needle cast

Phaeocryptopus gaeumannii (T. Rohde) Petr.

Tomentosus root rot

Inonotus tomentosus (Fr.:Fr.) Teng

Upper stem canker

Phoma eupyrena Sacc.

Fusarium avenaceum (Fr.) Sacc.

Fusarium sambucinum Fuckel

White stringy rot

Resinicium bicolor (Albertini & Schwein.:Fr.) Parmasto

PARASITIC PLANTS

Douglas-fir dwarf mistletoe

Arceuthobium douglasii Engelmann