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Diseases of Conifers
(Abies, Picea, Pinus, Pseudotsuga, and Other Species)

E. M. Hansen, K. J. Lewis, G. A. Chastagner, and A. Rossman, primary collators (last update: 7/6/2018)

 

Diseases of Abies spp. (Firs)

1. Abies sp.
2. A. alba (silver fir)
3. A. amabilis (Pacific silver fir)
4. A. balsamea (balsam fir)
5. A. bornmuelleriana (Turkish fir)
6. A. cephalonica (Greek fir)
7. A. concolor (white fir)
8. A. durangensis (Durango fir)
9. A. fargesii (Farges’ fir)
10. A. fraseri (Fraser fir)
11. A. grandis (grand fir)
12. A. koreana (Korean fir)
13. A. lasiocarpa (subalpine fir)
14. A. magnifica (red fir)
15. A. nebrodensis (Sicilian fir)
16. A. nordmanniana (Nordmann fir)
17. A. numidica (Algerian fir)
18. A. pinsapo (Spanish fir)
19. A. procera (noble fir)
20. A. religiosa (sacred fir)
21. A. sachalinensis (Sakhalin fir)
22. A. sibirica (Siberian fir)
23. A. veitchii (Veitch’s fir)
24. A. vejarii (Vejar’s fir)

Cankers and Twig Blights

Cucurbitaria bud blight
Gemmamyces piceae (Borth.) Casagrande2
Cytospora cankers and dieback
Cytospora abietis Sacc.—1, 7, 11
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—1
          (syn. Leucostoma kunzei (Fr.) Munk)
Delphinella shoot blight
Delphinella abietis (Rostr.) E. Müll.—2, 3, 4, 5, 6, 7, 10, 11, 13, 16, 18, 19, 22
D. balsameae (Waterman) E. Müll.—1, 3, 4, 7, 10, 11, 13, 18, 19
Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—1
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.;
     M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.;
     Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—1
Grovesiella canker
Grovesiella abieticola (Zeller & Goodd.) M. Morelet & Gremmen—2
          (syn. Pitostroma abietinum Kowalski & Sieber)
G. grantii A. Funk—1, 3, 4, 7, 11, 13, 14, 19
Lachnellula cankers
Lachnellula agassizii (Berk. & M. A. Curtis) Dennis—4, 10
L. arida (W. Phillips) Dennis—4
L. calyciformis (Batsch) Dharne—1
Perrotia gallica (P. Karst. & Har.) Spooner—4
Neonectria canker
Neonectria neomacrospora (C. Booth & Samuels) Mantiri & Samuels—2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22
Neonectria flute canker
Neonectria fuckeliana (C. Booth) Castl. & Rossman—1
     (syn. Nectria fuckeliana C. Booth)
Phomopsis canker
Diaporthe sp.—1
     (syn. Phomopsis sp.)
Scleroderris canker
Gremmeniella abietina (Lagerb.) M. Morelet—1, 4, 21
     (syns. Ascocalyx abietina (Lagerb.) Schläpf.-Bernh; Brunchorstia pinea (P. Karst.) Höhn.; Scleroderris lagerbergii Gremmen)
G. abietina var. abietina—1, 21
G. abietina var. balsamea—4
Sclerophoma shoot dieback
Sydowia polyspora (Bref. & Tavel) E. Müll.—1, 13, 16
Thyronectria canker
Thyronectria balsamea (Cooke & Peck) Seeler—1, 4, 7, 10, 13
syns. Nectria balsamea Cooke & Peck; Pleonectria balsamea (Cooke & Peck) Lar. N. Vassiljeva)
T. pinicola (Kirschst.) Jaklitsch & Voglmayr—1, 4, 7, 10, 13
syn. Pleonectria pinicola Kirschst.)
Other canker and twig blight pathogens
Camarographium abietis (M. Wilson & R. B. Anderson) Grove—1, 7, 13, 19
Phacidiopycnis balsamicola A. Funk—1
     (syn. Phacidium balsamicola (Smerlis) DiCosmo, Nag Raj & Kendr.)
Porodaedalea cancriformans (M. J. Larsen, Lombard, & Aho) T. Wagner & M. Fisch.—7

Disease with an Insect Vector

Procerum root disease
Leptographium procerum W. B. (Kendr.) M. J. Wingf.—10, 11
     (syn. Verticicladiella procera W. B. Kendr.)

Foliage Diseases

Black mildews and sooty molds
Eupelte farrae (Piroz. & Shoemaker) Arx & E. Müll.—1
     (syn. Maurodothina farrae Piroz. & Shoemaker)
Rasutoria abietis (Dearn.) M. E. Barr—1
     (syn. Epipolaeum abietis (Dearn.) Shoemaker)
Botrytis blight
Botrytis cinerea Pers.:Fr.—1
Current season needle necrosis
Physiological; Sydowia polyspora (Bref. & Tavel) E. Müll.—11, 13, 16, 19
Dothistroma needle blight
Dothistroma septosporum (Dorog.) M. Morelet—1
     (syns. Mycosphaerella pini Rostr.; Scirrhia pini A. Funk & A. K. Parker)
Felt blights and snow blights
Nematostoma parasiticum (R. Hartig) M. E. Barr—1, 2
     (syn. Herpotrichia parasitica (R. Hartig) Rostr.)
Fir broom rust
Melampsorella caryophyllacearum J. Schröt.—1, 4, 7, 10
Fir needle rust
Melampsora abieti-capraearum Tubeuf—1, 2, 16, 22
Milesina sp.—1
Pucciniastrum sp.—1
Pucciniastrum goeppertianum (Kühn) Kleb.—1
Uredinopsis sp.—1, 7, 11, 14
Interior needle blight
Curvularia sp.—1, 11, 13, 19
Mycosphaerella sp.—1, 11, 13, 19
Phaeocryptopus nudus (Peck) Petr.—1, 11, 13, 19
Phyllosticta sp.—1, 11, 13, 19
Rhizosphaera sp.—1, 11, 13, 19
Toxosporium sp.—11, 19
Isthmiella needle cast
Isthmiella abietis (Dearn.) Darke—11, 13
I. faullii (Darker) Darker—1, 10, 13
I. quadrispora Ziller—13
Lirula needle cast
Lirula abietis-concoloris (Mayor ex Dearn.) Darker 3, 7, 10, 11, 13, 14, 19
L. mirabilis (Darker) Darker—1, 4, 13
L. nervata (Darker) Darker—4, 10, 13
Lophodermium needle cast
Lophodermium abietis Rostr.—1
L. seditiosum Minter, Staley & Millar—1, 2
Rhizosphaera needle cast
Rhizosphaera kalkhoffii Bubák—1
R. pini (Corda) Maubl.—1, 4, 10, 13, 16
Virgella needle blight
Virgella robusta (Tubeuf) Darker—3, 7, 11, 14, 19
Web blight
Rhizoctonia butinii Oberw., R. Bauer, Garnica & R. Kirschner—2, 11, 16, 19, 23
Other foliage pathogens
Atichia glomerulosa (Ach. ex H. Mann) Stein—11
     (syn. Seuratia millardetii (Racib.) Meeker)
Hyalopsora sp.—1

Parasitic Plants

Dwarf mistletoe
Arceuthobium abietinum—8, 14
A. abietinum f. sp. concoloris—1
A. abietinum f. sp. magnificae—14
A. abietinum subsp. wiensii—14
A. abietis-religiosae—20, 24
A. chinense—1
A. tibetense—1
A. tsugense subsp. amabilae—1
European mistletoe
Viscum album subsp. abietis—1, 2
Leafy mistletoe
Phoradendron sp.—1
P. abietinum—14
P. pauciflorum—7
Viscum album—2
V. album subsp. abietis—1
Mistletoe
Arceuthobium sp.—1
Taxillus kaempferi—1
White fir mistletoe
Phoradendron abietinum—8
P. pauciflorum—7

Phytophthora Diseases

Phytophthora root rot, stem canker, and shoot blight
Phytophthora sp.—1, 4, 7, 9, 10, 13, 14, 17, 19
P. cactorum (Lebert & Cohn) J. Schröt1, 4, 7, 10
P. cambivora (Petri) Buisman—1, 19
P. cinnamomi Rands—1, 4, 7, 9, 10, 19
P. citricola Sawada—1, 4, 7, 10, 19
P. cryptogea Pethybr. & Laff.—1, 19
P. drechsleri Tucker—1, 10
P. gonapodyides (H. E. Petersen)—1, 19
P. inundata Brasier, Sánch. Hern. & S. A. Kirk—1, 16
P. megasperma Drechsler—1, 19
P. niederhauseri Z. G. Abad & J. A. Abad—1, 16
P. plurivora T. Jung & T. I. Burgess—1, 10
P. pseudotsugae Hamm & E. M. Hans.—1
P. sansomeana E. M. Hans. & Reeser—1
P. taxon kelmania—1
Ramorum disease of larch
Phytophthora ramorum Werres, De Cock, & Man in ’t Veld—11

Root Rots

Annosus root rot
Heterobasidion annosum (Fr.:Fr.) Bref. sensu stricto—1, 2
Armillaria root rot
Armillaria ostoyae (Romagn.) Herink—1, 2, 4
     (syns. Armillaria mellea var. obscura Gillet; Armillaria solidipes Peck;
     Armillariella obscura (Schaeff.) Romagn.; Armillariella ostoyae Romagn.)
Balsam butt rot
Oligoporus balsameus (Peck) Gilb. & Ryvarden—1, 4
Heterobasidion root and butt rot
Heterobasidion abietinum Niemelä & Korhonen—1
H. annosum (Fr.:Fr.) Bref. sensu stricto—1, 2
H. occidentale Otrosina & Garbelotto—1, 3, 11
     (syns. Fomes annosus (Fr.:Fr.) Cooke.; Fomitopsis annosa (Fr.:Fr.) P. Karst.; H. annosum (Fr.:Fr.) Bref.; Polyporus annosus Fr.:Fr.; Spiniger meineckellus (A. J. Olson) Stalpers; Trametes radiciperda R. Hartig)
Laminated root rot
Coniferiporia sulphurascens (Pilát) L. W. Zhou & Y. C. Dai—1, 2, 11
     (syns. Inonotus sulphurascens (Pilát) M. J. Larsen, Lombard, & J. W. Clark; Phellinidium sulphurascens (Pilát) Y. C. Dai; Phellinus sulphurascens Pilát)
Red-brown butt rot
Phaeolus schweinitzii (Fr.:Fr.) Pat.—1
     (syn. Polyporus schweinitzii Fr.:Fr.)
Other root rot pathogens
Coniophora puteana (Schumach.:Fr.) P. Karst.—4
Scytinostroma galactinum (Fr.) Donk—4

Stem Decays

Fir hydnum
Hericium abietis (Weir ex Hubert) K. A. Harrison—1, 7
     (syn. Hydnum abietis Weir ex Hubert)
Red ring rot
Porodaedalea cancriformans (M. J. Larsen, Lombard & Aho) T. Wagner & M. Fisch.—1
P. pini (Brot.) Murrill sensu latu—1
     (syns. Fomes pini (Thore) P. Karst.; Phellinus pini (Brot.) Bondartsev & Singer; Trametes pini (Brot.) Fr.)
Red rot
Stereum sanguinolentum (Alb. & Schwein.:Fr.) Fr.—1
     (syns. Haematostereum sanguinolentum (Alb. & Schwein.:Fr.) Pouzar; Stereum balsameum Peck)
Rust-red stringy rot
Echinodontium tinctorium (Ellis & Everh.) Ellis & Everh.—1
White stringy rot
Resinicium bicolor (Alb. & Schwein.:Fr.) Parmasto1

Diseases of Agathis spp. (Kauri)

1. Agathis sp.
2. A. australis (kauri)
3. A. macrophylla (Pacific kauri)
4. A. ovata (mountain kauri)
5. A. robusta (Queensland kauri pine)

Phytophthora Disease

Kauri root and collar rot
Phytophthora agathidicida B. S. Weir, Beever, Pennycook, & Bellgard—2

Root Rot

Brown root rot
Phellinidium noxium (Corner) Bondartseva & S. Herrera—3, 4, 5
     (syns. Fomes noxius Corner; Phellinus noxius (Corner) G. Cunn.)

Diseases of Araucaria spp.

1. Araucaria sp.
2. A. bidwillii (bunya pine)
3. A. columnaris (Cook pine)
4. A. cunninghamii (hoop pine)
5. A. heterophylla      
     (syn. A. excelsa) (Norfolk Island pine)
6. A. hunsteinii (Klinki)

Cankers and Twig Blight

Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—1
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—1

Foliage Disease

Needle rust
Mikronegeria sp.—1

Root Rots

Brown root rot
Phellinidium noxium (Corner) Bondartseva & S. Herrera—2, 3, 4, 5, 6
     (syns. Fomes noxius Corner; Phellinus noxius (Corner) G. Cunn.)
Other root rot pathogen
Junghuhnia vincta (Berk.) I. Hood & M. Dick.—4
     (syns. Poria vincta (Berk.) Cooke; Rigidoporus vinctus (Berk.) Ryvarden)

Diseases of Austrocedrus sp.

1. Austrocedrus chilensis

Foliage Disease

White needle rust
Mikronegeria alba Oehrens & R. S. Peterson—1

Phytophthora Disease

Mal del ciprés
Phytophthora austrocedri Gresl. & E. M. Hansen—1
     (syn. P. austrocedrae Gresl. & E. M. Hansen)

Diseases of CALOCEDRUS spP. (Incense Cedar)

1. Calocedrus sp.      
     (syn. Libocedrus)
2. C. decurrens (California incense cedar)
3. C. formosana (Taiwan incense cedar)

Canker and Twig Blight

Cypress canker
Seiridium cardinale (W. Wagener) B. Sutton & I. Gibson—2
     (syn. Coryneum cardinale W. Wagener)

Root Rot

Brown root rot
Phellinidium noxium (Corner) Bondartseva & S. Herrera—3
     (syns. Fomes noxius Corner; Phellinus noxius (Corner) G. Cunn.)
Heterobasidion root and butt rot
Heterobasidion annosum (Fr.:Fr.) Bref. sensu stricto—1
H. irregulare Garbelotto & Otrosina—1

Stem Rust

Gymnosporangium stem rust
Gymnosporangium libocedri (Henn.) F. Kern—1

Diseases of Cedrus spp. (Cedar)

1. Cedrus sp.
2. C. atlantica (Atlas cedar)
3. C. deodara (deodar cedar)

Cankers and Twig Blights

Cytospora cankers and dieback
Cytospora abietis Sacc.—3
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—1
     (syn. Leucostoma kunzei (Fr.) Munk)
Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—1
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—1
Sirococcus tip blight
Sirococcus conigenus (Pers.) P. F. Cannon & Minter—1
     (syn. S. strobilinus (Desm.) Petr.
Other canker and twig blight pathogen
Diaporthe juniperivora (G. G. Hahn) Rossman & Udayanga—1
     (syn. Phomopsis juniperivora G. G. Hahn)

Root Rot

Red-brown butt rot
Phaeolus schweinitzii (Fr.:Fr.) Pat.—1
     (syn. Polyporus schweinitzii Fr.:Fr.)

Stem Decay

Stem decay
Phellinus pini (Brot.) Bondartsev & Singer—2

Stem Rust

Peridermium witches’-broom
Peridermium cedri Barclay—3

Diseases of Chamaecyparis (Callitropsis) spp. (False Cypress)

1. Chamaecyparis sp.
2. C. formosensis (Taiwan cypress)
3. C. lawsoniana (Port Orford cedar)
4. C. obtusa (hinoki cypress)
5. C. pisifera (sawara cypress)
6. C. thyoides (Atlantic white cedar)
7. Callitropsis nootkatensis (Alaska cedar, yellow cedar)

Canker and Twig Blights

Cypress canker
Seiridium cardinale (W. Wagener) B. Sutton & I. Gibson—3, 4, 5, 6, 7
     (syn. Coryneum cardinale W. Wagener)
S. cupressi (Guba) Boesew.—3, 4, 5, 6, 7
     (syn. Cryptostictis cupressi Guba)
S. unicorne (Cooke & Ellis) B. Sutton—3, 4, 5, 6, 7
Cytospora canker and dieback
Cytospora abietis Sacc.—1
     (syn. Valsa abietis (Fr.:Fr))
Other canker and twig blight pathogens
Diaporthe juniperivora (G. G. Hahn) Rossman & Udayanga—1
     (syn. Phomopsis juniperivora G. G. Hahn)
Kabatina juniperi R. Schneid. & Arx—1
K. thujae R. Schneid. & Arx—1

Foliage Diseases

Cercospora needle blight
Passalora sequoiae (Ellis & Everh.) Y. L. Guo & W. H. Hsieh—1
     (syns. Asperisporium sequoiae (Ellis & Everh.) B. Sutton & Hodges; Cercospora sequoiae Ellis & Everh.)
Other foliage pathogens
Didymascella chamaecyparidis (J. F. Adams) Maire—6
Kabatina thujae R. Schneid. & Arx—7
Pseudocercospora thujina (Dearness) U. Braun & C. Nakash.—3
     (syn. Stigmina thujina (Dearn.) B. Sutton)

Phytophthora Diseases

Mal del ciprés
Phytophthora austrocedri Gresl. & E. M. Hansen—1
     (syn. P. austrocedrae Gresl. & E. M. Hansen)
Port Orford cedar root disease
Phytophthora lateralis Tucker & Milbrath—3, 4

Root Rot

Brown root rot
Phellinidium noxium (Corner) Bondartseva & S. Herrera—2, 4
     (syns. Fomes noxius Corner; Phellinus noxius (Corner) G. Cunn.)
Cedar laminated butt rot
Coniferiporia weirii (Murrill) L. W. Zhou & Y. C. Dai—7
     (syns. Inonotus weirii (Murrill) Kotl. & Pouzar; Phellinidium weirii (Murrill) Y. C. Dai; Phellinus weirii (Murrill) Gilb.; Poria weirii (Murrill) Murrill)

Stem Rusts

Gymnosporangium rusts
Gymnosporangium biseptatum Ellis—1
G. ellisii De Toni—1
G. hyalinum F. Kern ex Cummins—1
G. miyabei G. Yamada & Miyabe—1

Diseases of Cupressus spp. (Cypress)

1. Cupressus sp.
2. C. arizonica (Arizona cypress)
3. C. lusitanica (Mexican cypress)
4. C. macrocarpa (Monterey cypress)
5. C. sempervirens (Mediterranean cypress)
6. C. torulosa (Himalayan cypress)

Cankers and Twig Blights

Cypress canker
Seiridium cardinale (W. Wagener) B. Sutton & I. Gibson—2, 3, 4, 5, 6
     (syn. Coryneum cardinale W. Wagener)
S. cupressi (Guba) Boesew.—2, 3, 4, 5, 6
syn. Cryptostictis cupressi Guba)
S. unicorne (Cooke & Ellis) B. Sutton—2,3, 4, 5, 6
Cytospora cankers and dieback
Cytospora abietis Sacc.—4
     (syn. Valsa abietis Fr. : Fr.)
C. kunzei Sacc.—1
     (syn. Leucostoma kunzei (Fr.) Munk)
Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—1
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—1

Other canker and twig blight pathogen

Diaporthe juniperivora (G. G. Hahn) Rossman & Udayanga—1
     (syn. Phomopsis juniperivora G. G. Hahn)

Foliage Diseases

Cercospora needle blight
Passalora sequoiae (Ellis & Everh.) Y. L. Guo & W. H. Hsieh—1, 2
     (syns. Asperisporium sequoiae (Ellis & Everh.) B. Sutton & Hodges; Cercospora sequoiae Ellis & Everh.)
Cypress leaf blight and dieback
Lasiodiplodia theobromae (Pat.) Griffon & Maubl.—1
Seiridium unicorne (Cooke & Ellis) B. Sutton—1

Parasitic Plants

Leafy mistletoe
Phoradendron sp.—1
Psittacanthus americanus—1
P. angustifolius—1
P. calyculatus—1
P. macrantherus—1

Root Rot

Brown root rot
Phellinidium noxium (Corner) Bondartseva & S. Herrera—1, 3
     (syns. Fomes noxius Corner; Phellinus noxius (Corner) G. Cunn.)

Stem Rusts

Gymnosporangium rusts
Gymnosporangium clavipes (Cooke & Peck) Cooke & Peck—1
G. cunninghamianum Barclay—1
G. cupressi Barclay—1
G. sabinae (Dicks.) G. Winter—1
G. taianum F. Kern—1
G. tsingchenense C. T. Wei—1
Uredo apacheca R. S. Peterson—1

Diseases of Juniperus spp. (Junipers)

1. Juniperus sp.
2. J. brevifolia (Azores juniper)
3. J. communis (common juniper)
4. J. sabina (savin juniper)
5. J. virginiana (red cedar)

Cankers and Twig Blights

Cypress canker
Seiridium cardinale (W. Wagener) B. Sutton & I. Gibson—1, 4, 5
     (syn. Coryneum cardinale W. Wagener)
S. cupressi (Guba) Boesew.—1, 4, 5
     (syn. Cryptostictis cupressi Guba)
S. unicorne (Cooke & Ellis) B. Sutton—1, 4, 5
Cytospora cankers and dieback
Cytospora abietis Sacc.—3
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—1
Other canker and twig blight pathogen
Kabatina thujae R. Schneid. & Arx—1

Foliage Diseases

Cercospora needle blight
Passalora sequoiae (Ellis & Everh.) Y. L. Guo & W. H. Hsieh—1
     (syns. Asperisporium sequoiae (Ellis & Everh.) B. Sutton & Hodges; Cercospora sequoiae Ellis & Everh.)
Other foliage pathogens
Lophodermium juniperinum (Fr.) De Not.—3
Phomopsis juniperivora G. G. Hahn—3

Parasitic Plants

Dwarf mistletoes
Arceuthobium sp.—1
A. azoricum—2
A. juniperi-procerae—1
A. oxycedri—1
Leafy mistletoes
Phoradendron sp.—1
P. adamsii—1
P. bolleanum—1
P. capitellatum—1
P. densum—1
P. hawksworthii—1
P. juniperinum—1
P. minutifolium—1
P. rufescens—1
P. saltillense—1
Other parasitic plant pathogen
Orobanche minor—1

Phytophthora Diseases

Mal del ciprés
Phytophthora austrocedri Gresl. & E. M. Hansen—3
     (syn. P. austrocedrae Gresl. & E. M. Hansen)
Other Phytophthora pathogen
Phytophthora cinnamomi Rands—3

Root Rots

Cedar laminated butt rot
Coniferiporia weirii (Murrill) L. W. Zhou & Y. C. Dai—1
     (syns. Inonotus weirii (Murrill) Kotl. & Pouzar; Phellinidium weirii (Murrill) Y. C. Dai; Phellinus weirii (Murrill) Gilb.; Poria weirii (Murrill) Murrill)
Heterobasidion root and butt rot
Heterobasidion annosum (Fr.:Fr.) Bref. sensu stricto—1
H. irregulare Garbelotto & Otrosina—1

Stem Rusts

Cedar–apple rust
Gymnosporangium juniperi-virginianae Schwein.—5
Gymnosporangium stem rusts
Gymnosporangium clavariiforme Dietel—1, 3
G. clavipes Cooke & Peck—1
G. confusum Plowr.—1
G. cornutum Arthur ex F. Kern—1, 3
G. gracile Pat.—1
G. monticola H.Y. Yun—1
G. sabinae (Dicks.) G. Winter—1
G. tremelloides R. Hartig—1

Diseases of Larix spp. (Larch)

1. Larix sp.
2. L. decidua (European larch)
3. L. europaea (European larch)
4. L. kaempferi (Japanese larch)
5. L. laricina (tamarack)
6. L. occidentalis (western larch)
7. L. sibirica (Russian larch)
8. L. × eurolepis (hybrid larch)

Cankers and Twig Blights

Cytospora cankers and dieback
Cytospora abietis Sacc.—1
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—1
     (syn. Leucostoma kunzei (Fr.) Munk)
Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—1
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
European larch canker
Lachnellula willkommii (R. Hartig) Dennis—1, 2, 3
     (syns. Dasyscyphus willkommii (R. Hartig) Rehm; Trichoscyphella willkommii (R. Hartig) Nannf.)
Lachnellula cankers
Lachnellula laricis (Cooke) Dharne—1
L. occidentalis (Hahn & Ayers) Dharne—1
Larch Guignardia dieback
Guignardia laricina (Sawada) W. Yamam. & Kaz. Itô—1
Sclerophoma shoot dieback
Sydowia polyspora (Bref. & Tavel) E. Müll.—1
Thyronectria canker
Thyronectria balsamea (Cooke & Peck) Seeler—3, 7
     (syns. Nectria balsamea Cooke & Peck; Pleonectria balsamea (Cooke & Peck) Lar. N. Vassiljeva)
T. pinicola (Kirschst.) Jaklitsch & Voglmayr—3, 7
     (syn. Pleonectria pinicola Kirschst.)
Other canker and twig blight pathogen
Gremmeniella laricina (Ettl.) Petrini, L.E. Petrini, Lafl. & Ouell.—1

Disease with Insect Vectors

Sirex–Amylostereum rot
Amylostereum areolatum (Chaillet ex Fr.:Fr.) Boidin ex J. Erikss., Hjortstam & Ryvarden—1
A. chailletii (Pers.:Fr.) Boidin—1
     (syn. Stereum chailletii (Pers.:Fr.) Fr.)

Foliage Diseases

Dothistroma needle blight
Dothistroma pini Hulbary—1
D. septosporum (Dorog.) M. Morelet—1
     (syns. Mycosphaerella pini Rostr.; Scirrhia pini A. Funk & A. K. Parker)
Larch needle cast
Mycosphaerella laricis-leptolepidis Kaz. Itô, K. Sato & M. Ota—1
Rhabdocline laricis (Vuill.) J. K. Stone—1
     (syn. Meria laricis Vuill.)
Needle rusts
Melampsora sp.—1
Melampsoridium sp.—1
Other foliage pathogens
Hypodermella laricis Tubeuf—1
     (syn. Leptothyrella laricis Dearn.)
Lophodermium sp.—1
Mycosphaerella laricina (R. Hartig) Mig.—1

Parasitic Plants

Dwarf mistletoe
Arceuthobium laricis—6
Leafy mistletoe
Viscum album subsp. austriacum—1

Phytophthora Diseases

Ramorum disease
Phytophthora ramorum Werres, De Cock, & Man in ’t Veld—2, 4, 8
Other Phytophthora pathogens
P. gonapodyides (H. E. Petersen)—1
P. pseudosyringae T. Jung & Delatour—1

Root Rots

Brown root rot
Phellinidium noxium (Corner) Bondartseva & S. Herrera—4
     (syns. Fomes noxius Corner; Phellinus noxius (Corner) G. Cunn.)
Heterobasidion root and butt rot
Heterobasidion abietinum Niemelä & Korhonen—1
H. annosum (Fr.:Fr.) Bref. sensu stricto—1
H. irregulare Garbelotto & Otrosina—1
H. occidentale Otrosina & Garbelotto—1, 6
     (syns. Fomes annosus (Fr.:Fr.) Cooke.; Fomitopsis annosa (Fr.:Fr.) P. Karst.; H. annosum (Fr.:Fr.) Bref.; Polyporus annosus Fr.:Fr.; Spiniger meineckellus (A. J. Olson) Stalpers; Trametes radiciperda R. Hartig)
H. parviporum Niemelä & Korhonen—1
Laminated root rot
Coniferiporia sulphurascens (Pilát) L. W. Zhou & Y. C. Dai—1
     (syns. Inonotus sulphurascens (Pilát) M. J. Larsen, Lombard, & J. W. Clark; Phellinidium sulphurascens (Pilát) Y. C. Dai; Phellinus sulphurascens Pilát)
Red-brown butt rot
Phaeolus schweinitzii (Fr.:Fr.) Pat.—1
     (syn. Polyporus schweinitzii Fr.:Fr.)

Stem Decays

Red rot
Stereum sanguinolentum (Alb. & Schwein.:Fr.) Fr.—1
     (syns. Haematostereum sanguinolentum (Alb. & Schwein.:Fr.) Pouzar; Stereum balsameum Peck)
Rust-red stringy rot
Echinodontium tinctorium (Ellis & Everh.) Ellis & Everh.—6
White stringy rot
Resinicium bicolor (Alb. & Schwein.:Fr.) Parmasto1

Stem Rust

Pine twist rust

Melampsora populnea (Pers.) P. Karst.—1, 2
     (syn. M. pinitorqua Rostr.)

Diseases of Picea spp. (Spruce)

1. Picea sp.
2. P. abies (Norway spruce)
3. P. breweriana (Brewer’s spruce)
4. P. engelmannii (Engelmann spruce)
5. P. glauca (white spruce)
6. P. mariana (black spruce)
7. P. nigra (Austrian spruce)
8. P. omorica (Serbian spruce)
9. P. pungens (blue spruce)
10. P. rubens (red spruce)
11. P. sitchensis (Sitka spruce)

Cankers and Twig Blights

Cucurbitaria bud blight
Camarosporium strobilinum E. Bommer, M. Rousseau & Sacc.—5
Dichomera gemmicola A. Funk & B. Sutton—4, 5, 11
Gemmamyces piceae (Borth.) Casagrande1, 9
Cytospora cankers and dieback
Cytospora abietis Sacc.—1
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—1, 2, 9
     (syn. Leucostoma kunzei (Fr.) Munk)
Diplodia shoot blight and canker
Diplodia pinea (Desm.) J. Kickx fil.—2, 8
Diplodia sapinea (Fr.) Fuckel—1
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.)
     Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea
     Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—1
Neonectria canker
Neonectria sp.—1
Neonectria flute canker
Neonectria fuckeliana (C. Booth) Castl. & Rossman—2
     (syn. Nectria fuckeliana C. Booth)
Phomopsis canker
Phomopsis spp.—2, 5, 9
Phomopsis twig blight and canker
Phomopsis occulta Traverso—9
Pine Sphaeropsis dieback
Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton—1
Scleroderris canker
Gremmeniella abietina (Lagerb.) M. Morelet—1, 2, 5, 6
     (syns. Ascocalyx abietina (Lagerb.) Schläpf.-Bernh; Brunchorstia pinea (P. Karst.) Höhn.; Scleroderris lagerbergii Gremmen)
G. abietina var. abietina (Lagerb.) M. Morelet—1, 2
G. abietina var. balsamea Petrini, L. E. Petrini, Lafl. & Ouell.—5, 6
Sclerophoma shoot dieback
Sydowia polyspora (Bref. & Tavel) E. Müll.—2
Sirococcus shoot blight
Sirococcus conigenus (Pers.) P. F. Cannon & Minter—2, 5, 9
     (syn. S. strobilinus (Desm.) Petr.
Sirococcus tip blight
Sirococcus conigenus (Pers.) P. F. Cannon & Minter—9, 11
     (syn. S. strobilinus (Desm.) Petr.
Thyronectria canker
Thyronectria balsamea (Cooke & Peck) Seeler—4, 7
     (syns. Nectria balsamea Cooke & Peck; Pleonectria balsamea (Cooke & Peck) Lar. N. Vassiljeva)
T. pinicola (Kirschst.) Jaklitsch & Voglmayr—4, 7
     (syn. Pleonectria pinicola Kirschst.)
Other canker and twig blight pathogen
Phacidium coniferarum (Hahn) DiCosmo, Nag Raj & Kendr.—2

Diseases of Cones and Seeds

Spruce cone rusts
Chrysomyxa monesis Ziller—11
C. pyrolae (DC.) Rostr.—1
C. woronini Tranzschel—5, 6
Thekopsora cone rust
Thekopsora areolata (Fr.) Magnus—1
     (syn. Pucciniastrum areolatum (Fr.) G. H. Otth)

Diseases with Insect Vectors

Procerum root disease
Leptographium procerum W. B. (Kendr.) M. J. Wingf.—2
     (syn. Verticicladiella procera W. B. Kendr.)
Sirex–Amylostereum rot
Amylostereum areolatum (Chaillet ex Fr.:Fr.) Boidin ex J. Erikss., Hjortstam & Ryvarden—1
A. chailletii (Pers.:Fr.) Boidin—1
     (syn. Stereum chailletii (Pers.:Fr.) Fr.)

Foliage Diseases

Dothistroma needle blight
Dothistroma pini Hulbary—1
D. septosporum (Dorog.) M. Morelet—1
     (syns. Mycosphaerella pini Rostr.; Scirrhia pini A. Funk & A. K. Parker)
Herpotrichia needle browning
Nematostoma parasiticum (R. Hartig) M. E. Barr—1
     (syn. Herpotrichia parasitica (R. Hartig) Rostr.)
Isthmiella needle cast
Isthmiella faullii (Darker) Darker—6
     (syn. Bifusella faullii Darker)
Lirula needle casts
Lirula macrospora (R. Hartig) Darker—1
L. nervata (Darker) Darker—1
Lophodermium needle cast
Lophodermium abietis Rostr.—2
L. seditiosum Minter, Staley & Millar—2
Needle blight
Isthmiella crepidiformis (Darker) Darker—4, 5
Lophodermium piceae (Fuckel) Höhn.—1
Phaeocryptopus nudus (Peck) Petr.—1
Rhizosphaera needle blight
Rhizosphaera kalkhoffii Bubák—1, 2, 5, 9
Spruce broom rust
Chrysomyxa arctostaphyli Dietel—1
Spruce needle rusts
Ceropsora sp.—1
Chrysomyxa abietis (Wallr.) Unger—2, 5, 6, 9
Chrysomyxa deformans (Dietel) Jacz.—1
Chrysomyxa ledicola Lagerh.—1
Chrysomyxa weirii H. S. Jacks.—1
Spruce shoot rust
Chrysomyxa deformans (Dietel) Jacz.—1
C. woronini Tranzschel—1
Stigmina needle cast
Stigmina lautii B. Sutton—2, 5, 6, 9
Sudden needle drop
Setomelanomma holmii M. Morelet—2, 5, 9
Web blight
Rhizoctonia butinii Oberw., R. Bauer, Garnica & R. Kirschner—1
Other foliage pathogen
Stigmina verrucosa (Morgan-Jones) B. Sutton—4, 5, 6

Parasitic Plants

Dwarf mistletoe
Arceuthobium abietinum subsp. wiensii—3
A. microcarpum—4, 9
A. pusillum—1, 6
A. sichuanense1
Leafy mistletoe
Viscum album subsp. austriacum—1
Other parasitic plant
Korthalsella dacrydii—1

Root Rots

Annosus root rot
Heterobasidion annosum (Fr.:Fr.) Bref. sensu stricto—2, 9
Armillaria root rot
Armillaria ostoyae (Romagn.) Herink—1, 2
     (syns. Armillaria mellea var. obscura Gillet; Armillaria solidipes Peck; Armillariella obscura (Schaeff.) Romagn.; Armillariella ostoyae Romagn.)
Balsam butt rot
Oligoporus balsameus (Peck) Gilb. & Ryvarden—1
     (syns. Polyporus balsameus Peck; Postia balsamea (Peck) Jülich)
Coniophora root and butt rot
Coniophora puteana (Schumach.:Fr.) P. Karst.—1
Heterobasidion root and butt rot
Heterobasidion abietinum Niemelä & Korhonen—1
H. annosum (Fr.:Fr.) Bref. sensu stricto—2
H. occidentale Otrosina & Garbelotto—1, 11
     (syns. Fomes annosus (Fr.:Fr.) Cooke.; Fomitopsis annosa (Fr.:Fr.) P. Karst.; H. annosum (Fr.:Fr.) Bref.; Polyporus annosus Fr.:Fr.; Spiniger meineckellus (A. J. Olson) Stalpers; Trametes radiciperda R. Hartig)
H. parviporum Niemelä & Korhonen—1, 2
Laminated root rot
Coniferiporia sulphurascens (Pilát) L. W. Zhou & Y. C. Dai—1
     (syns. Inonotus sulphurascens (Pilát) M. J. Larsen, Lombard, & J. W. Clark; Phellinidium sulphurascens (Pilát) Y. C. Dai; Phellinus sulphurascens Pilát)
Red-brown butt rot
Phaeolus schweinitzii (Fr.:Fr.) Pat.—1, 11
     (syn. Polyporus schweinitzii Fr.:Fr.)
Red ring rot
Porodaedalea pini (Brot.) Murrill sensu latu—1
     (syns. Fomes pini (Thore) P. Karst.; Phellinus pini (Brot.) Bondartsev & Singer; Trametes pini (Brot.) Fr.)
Rhizina root disease
Rhizina undulata Fr.:Fr.—10, 11
     (syn. R. inflata (Schaeff.) P. Karst.)
Tomentosus root rot
Onnia tomentosa (Fr.:Fr.) P. Karst.—1
     (syns. Coltricia tomentosa (Fr.:Fr.) Murrill; Inonotus tomentosus (Fr.:Fr.) S. Teng; Polyporus tomentosus Fr.:Fr.)
Other root rot pathogen
Scytinostroma galactinum (Fr.) Donk—1

Stem Decays

Fir hydnum
Hericium abietis (Weir ex Hubert) K. A. Harrison—1
     (syn. Hydnum abietis Weir ex Hubert)
Red rot
Stereum sanguinolentum (Alb. & Schwein.:Fr.) Fr.—2
     (syns. Haematostereum sanguinolentum (Alb. & Schwein.:Fr.) Pouzar; Stereum balsameum Peck)
Rust-red stringy rot
Echinodontium tinctorium (Ellis & Everh.) Ellis & Everh.—4, 5
White stringy rot
Resinicium bicolor (Alb. & Schwein.:Fr.) Parmasto1

Diseases of Pinus spp. (Pine)

1. Pinus sp.
2. P. albicaulis (whitebark pine)
3. P. aristata (bristlecone pine)
4. P. arizonica (Arizona pine)
5. P. attenuata (knobcone pine)
6. P. ayacahuite (Mexican white pine)
7. P. banksiana (jack pine)
8. P. brutia (Turkish pine)
9. P. caribaea (Caribbean pine)
10. P. caribaea var. hondurensis
11. P. cembra (Swiss stone pine)
12. P. cembroides subsp. orizabensis
13. P. chihuahuana
14. P. contorta (lodgepole pine)
15. P. coulteri (Coulter pine)
16. P. densiflora (Japanese red pine)
17. P. devoniana (Michoacan pine)
18. P. discolor (border pinyon)
19. P. durangensis (Durango pine)
20. P. echinata (shortleaf pine)
21. P. edulis (Colorado pinyon)
22. P. eldarica
23. P. elliotii (slash pine)
24. P. engelmannii (Apache pine)
25. P. excelsa
26. P. flexilis (limber pine)
27. P. griffithii
28. P. halepensis (Aleppo pine)
29. P. jeffreyi (Jeffrey pine)
30. P. kesiya (khasi pine)
31. P. koraiensis (Korean pine)
32. P. lambertiana (sugar pine)
33. P. laricio
34. P. luchuensis (Luchu pine)
35. P. massoniana (Chinese red pine)
36. P. merkusii (Sumatran pine)
37. P. monophyla (single-leaf pinyon)
38. P. montana
39. P. montezumae (Montezuma pine)
40. P. monticola (western white pine)
41. P. mugo (mugo pine)
42. P. muricata (bishop pine)
43. P. nigra (Austrian pine)
44. P. occidentalis
45. P. oocarpa
46. P. pallasiana
47. P. palustris (longleaf pine)
48. P. patula (Mexican weeping pine)
49. P. peuce (Macedonian white pine)
50. P. pinaster (maritime pine)
51. P. pinea (Italian stone pine)
52. P. ponderosa (ponderosa pine)
53. P. pumila (creeping pine)
54. P. radiata (Monterey pine)
55. P. resinosa (Norway pine or red pine)
56. P. rigida (pitch pine)
57. P. rotundata
58. P. roxburghii (chir pine)
59. P. sabiniana (California foothill pine)
60. P. strobiformis (southwestern white pine)
61. P. strobus (eastern white pine)
62. P. sylvestris (Scots pine)
63. P. tabuliformis (southern Chinese pine)
64. P. taeda (loblolly pine)
65. P. taiwanensis (Taiwan red pine)
66. P. takahasii
67. P. thunbergii (Japanese black pine)
68. P. uncinata (mountain pine)
69. P. virginiana (Virginia pine)
70. P. wallichiana (Himalayan blue pine)
71. P. yunnanensis (Yunnan pine)

Cankers and Twig Blights

Atropellis canker
Atropellis piniphila (Weir) M. L. Lohman & Cash—14, 52, 62
     (syns. Atropellis arizonica M.L. Lohman & Cash; Cenangium piniphilum Weir)
Caliciopsis canker
Caliciopsis pinea Peck—1
Cytospora cankers and dieback
Cytospora abietis Sacc.—1
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—1
     (syn. Leucostoma kunzei (Fr.) Munk)
Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—1, 43, 54, 55, 62
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.;
     M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.;
     Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—1, 54
Grovesiella canker
Grovesiella abieticola (Zeller & Goodd.) M. Morelet & Gremmen—40
     (syn. Pitostroma abietinum Kowalski & Sieber)
Lachnellula cankers
Lachnellula agassizii (Berk. & M. A. Curtis) Dennis—1
L. calyciformis (Batsch) Dharne—1
Neonectria flute canker
Neonectria fuckeliana (C. Booth) Castl. & Rossman—54
     (syn. Nectria fuckeliana C. Booth)
Phacidium canker
Allantophomopsiella pseudotsugae (M. Wilson) Crous—1
     (syns. Phacidiopycnis pseudotsugae (M. Wilson) G. G. Hahn; Phacidium coniferarum (Hahn) DiCosmo, Nag Raj & Kendr.)
Pitch canker
Fusarium circinatum Nirenberg & O’Donnell—1, 8, 48, 54, 64
     (syns. F. lateritium f. sp. pini Hepting; F. moniliforme var. subglutinans Wollenw. & Reinking; F. subglutinans f. sp. pini J. C. Correll et al.; Gibberella circinata Nirenberg & O’Donnell)
Scleroderris canker
Gremmeniella abietina (Lagerb.) M. Morelet—14, 40, 43, 50, 52, 55, 62
     (syns. Ascocalyx abietina (Lagerb.) Schläpf.-Bernh; Brunchorstia pinea (P. Karst.) Höhn.; Scleroderris lagerbergii Gremmen)
G. abietina var. abietina (Lagerb.) M. Morelet—1, 14, 43, 55, 62
G. abietina var. cembrae—11, 41
Sclerophoma shoot dieback
Sydowia polyspora (Bref. & Tavel) E. Müll.—1
Sirococcus tip blight
Sirococcus conigenus (Pers.) P. F. Cannon & Minter—14, 55, 62
     (syn. S. strobilinus (Desm.) Petr.
Thyronectria canker
Thyronectria balsamea (Cooke & Peck) Seeler—7, 25, 27, 55, 61, 70
     (syns. Nectria balsamea Cooke & Peck; Pleonectria balsamea (Cooke & Peck) Lar. N. Vassiljeva)
T. pinicola (Kirschst.) Jaklitsch & Voglmayr—1, 54, 62
     (syn. Pleonectria pinicola Kirschst.)
Other canker and twig blight pathogens
Cenangium ferruginosum Fr.:Fr.—1
Crumenulopsis sororia (P. Karst.) J. W. Groves—1
Ramichloridium pini de Hoog & Rahman—14
Tympanis hypopodia Nyl.—14

Disease of Cones and Seeds

Pine cone rust
Cronartium conigenum Hedgc. & N. Hunt—1
C. strobilinum Hedgc. & Hahn—9, 47

Diseases with Insect Vectors

Black stain root disease
Leptographium wageneri (Kendr.) M. J. Wingfield—14, 37, 52
     (syns. Ceratocystis wageneri Goheen & F. W. Cobb; Grosmannia wageneri (Goheen & F. W. Cobb) Zipfel, Z. W. de Beer & M. J. Wingf.; Ophiostoma wageneri (Goheen & F. W. Cobb) T. C. Harr.; Verticicladiella wageneri W. B. Kendr.)
Pine wilt disease (pine wood or pine wilt nematode)
Bursaphelenchus xylophilus—1, 5, 14, 34, 35, 43, 50, 54, 62, 67
Procerum root disease
Leptographium procerum W. B. (Kendr.) M. J. Wingf.—1, 43, 61, 62
     (syn. Verticicladiella procera W. B. Kendr.)
Sirex–Amylostereum rot
Amylostereum areolatum (Chaillet ex Fr.:Fr.) Boidin ex J. Erikss., Hjortstam & Ryvarden—1, 48, 54, 64
A. chailletii (Pers.:Fr.) Boidin—1, 48, 54, 64
     (syn. Stereum chailletii (Pers.:Fr.) Fr.)
Southern pine decline
Leptographium sp.—1, 20, 23, 47, 64

Foliage Diseases

Bifusella needle blights
Bifusella linearis (Peck) Höhn.—2, 26, 40, 61
B. pini (Dearn.) Darker—14, 21, 26, 37
B. saccata (Darker) Darker—2
Brown spot needle blight
Lecanosticta acicola (Thüm.) Syd.—1, 47, 61, 62
     (syns. Dothidea acicola (Dearn.) M. Morelet; Dothistroma acicola (Thüm.) Schischkina & Tsanava; Eruptio acicola (Dearn.) M. E. Barr; Lecanosticta pini Syd.; Mycosphaerella dearnessii M. E. Barr; Oligostroma acicola Dearn.; Scirrhia acicola (Dearn.) Sigg.; Septoria acicola (Thüm.) Sacc.; Systremma acicola (Dearn.) F. A. Wolf & Barbour)
Coleosporium needle rust
Coleosporium asterum (Dietel) Syd. & P. Syd.—1, 43, 55, 62
Cyclaneusma needle cast
Cyclaneusma minus (Butin) DiCosmo, Peredo & Minter—1, 54, 62
     (syn. Naemacyclus minor Butin)
Davisomycella needle cast
Davisomycella spp.—7, 14
Dooks needle blight
Lophophacidium dooksii Corlett & Shoemaker—40, 49, 61, 70
     (syn. Canavirgella banfieldii W. Merrill, N. G. Wenner & T. A. Dreisbach)
Dothistroma needle blight
Dothistroma pini Hulbary—1, 14, 43, 54, 55, 62
D. septosporum (Dorog.) M. Morelet—1, 14, 43, 52, 54, 55, 62
     (syns. Mycosphaerella pini Rostr.; Scirrhia pini A. Funk & A. K. Parker)
Isthmiella needle cast
Isthmiella faullii (Darker) Darker—1, 61
     (syn. Bifusella faullii Darker)
Lophodermella needle casts
Lophodermella arcuata (Darker) Darker—2, 26, 32, 40
L. cerina (Darker) Darker—14, 23, 52, 64
L. concolor (Dearn.) Darker—5, 7, 8
L. montivaga Petr.—5, 7, 8
L. morbida Staley & Bynum—5, 52
L. sulcigena (Rostr.) Höhn—62
Lophodermium needle casts
Lophodermium australe Dearn.—1
L. seditiosum Minter, Staley & Millar—1, 43, 50, 55, 61, 62
Meloderma needle blight
Meloderma desmazieri (Duby) Darker—1, 7, 26, 40, 54, 55, 56, 61, 70
Pine needle rusts
Coleosporium sp.—1
C. asterum (Dietel) Syd. & P. Syd.—1, 55, 62
Ploioderma needle cast
Ploioderma lethale (Dearn.) Darker—1, 43, 55
Rhizosphaera needle cast
Rhizosphaera kalkhoffii Bubák—1, 52, 67
R. pini (Corda) Maubl.—1
White pine needle cast
Bifusella linearis (Peck) Höhn.—61
Canavirgella banfieldii W. Merrill, N. G. Wenner & T. A. Dreisbach—61
Other foliage pathogens
Cercoseptoria pini-densiflorae (Hori & N. Nambu) Deighton—1
Phacidium coniferarum (Hahn) DiCosmo, Nag Raj & Kendr.—14, 62
P. infestans P. Karst.—62

Parasitic Plants

Dwarf mistletoe
Arceuthobium americanum—14
A. apachecum—60
A. bicarnatum44
A. blumeri—60
A. californicum—32
A. campylopodum—29, 52
A. cyanocarpum—1
A. divaricatum—1
A. durangense—19, 39
A. gillii—13
A. globosum subsp. aureum—1
A. globosum subsp. globosum—1
A. globosum subsp. grandicaule—1
A. globosum subsp. petersonii—1
A. guatemalense—6
A. hondurense—45
A. hondurense subsp. hawksworthii—10
A. microcarpum subsp. aristatae—3
A. minutissimum—27
A. monticola—40
A. nigrum—1
A. occidentale—59
A. pendens—12, 18
A. pini—63
A. rubrum—1
A. siskiyouense—5
A. strictum—1
A. tsugense subsp. contortae—14
A. vaginatum subsp. cryptopodum—52
A. vaginatum subsp. vaginatum—1
A. verticilliflorum—1
A. yecorense—1
European mistletoe
Viscum album—43, 62
Leafy mistletoe
Psittacanthus spp.—1

Phytophthora Diseases

Daño foliar del pino
Phytophthora pinifolia Alv. Durán, Gryzenh. & M. J. Wingf.—54
Littleleaf disease
Phytophthora cinnamomi Rands—20, 64, 69
Phytophthora root rot
Phytophthora cactorum (Lebert & Cohn) J. Schröt—40, 61
P. cambivora (Petri) Buisman—40, 61
P. cinnamomi Rands—1, 20, 40, 54, 61
P. citricola Sawada—40, 61
P. cryptogea Pethybr. & Laff.—40, 61
P. drechsleri Tucker—40, 61
P. gonapodyides (H. E. Petersen) Buisman—40, 61
P. inundata Brasier, Sánch. Hern. & S. A. Kirk—40, 61
P. megasperma Drechsler—40, 61
P. niederhauseri Z. G. Abad & J. A. Abad—40, 61
P. plurivora T. Jung & T. I. Burgess—40, 61
P. pseudotsugae Hamm & E. M. Hans.—40, 61
Red needle cast
Phytophthora pluvialis Reeser, W. Sutton, & E. Hansen—48, 54

Root Rots

Armillaria root rot
Armillaria fuscipes Petch—1
A. limonea (G. Stev.) Boesew.—54
A. novae-zelandiae (G. Stev.) Herink—54
A. ostoyae (Romagn.)—14, 43, 50, 54, 62
Brown root rot
Phellinidium noxium (Corner) Bondartseva & S. Herrera—1, 9, 23, 30, 36, 67
     (syns. Fomes noxius Corner; Phellinus noxius (Corner) G. Cunn.)
Heterobasidion root and butt rot
Heterobasidion annosum (Fr.:Fr.) Bref. sensu stricto—1, 50, 62
H. irregulare Garbelotto & Otrosina—1, 28, 51
Laminated root rot
Coniferiporia sulphurascens (Pilát) L. W. Zhou & Y. C. Dai—1
     (syns. Inonotus sulphurascens (Pilát) M. J. Larsen, Lombard, & J. W. Clark; Phellinidium sulphurascens (Pilát) Y. C. Dai; Phellinus sulphurascens Pilát)
Red-brown butt rot
Phaeolus schweinitzii (Fr.:Fr.) Pat.—1, 49, 54
     (syn. Polyporus schweinitzii Fr.:Fr.)
Tomentosus root rot
Onnia tomentosa (Fr.:Fr.) P. Karst.—1, 7, 14
     (syns. Coltricia tomentosa (Fr.:Fr.) Murrill; Inonotus tomentosus (Fr.:Fr.) S. Teng; Polyporus tomentosus Fr.:Fr.)
Other root rot pathogens
Diplodia sapinea (Fr.) Fuckel—9, 64
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
Ganoderma australe (Fr.:Fr.) Pat.—30
Gloeopeniophorella sacrata (G. Cunn.) Hjortstam & Ryvarden—54
Junghuhnia vincta (Berk.) I. Hood & M. Dick.—54
     (syns. Poria vincta (Berk.) Cooke; Rigidoporus vinctus (Berk.) Ryvarden)
Pseudophaeolus baudoni (Pat.) Ryvarden—1, 9
Rhizina undulata Fr.:Fr.—1
syn. R. inflata (Schaeff.) P. Karst.)
Rigidoporus lineatus (Pers.) Ryvarden—30
Rosellinia spp.—54

Stem Decays

Red ring rot
Porodaedalea pini (Brot.) Murrill sensu latu—1, 7, 14, 61
     (syns. Fomes pini (Thore) P. Karst.; Phellinus pini (Brot.) Bondartsev & Singer; Trametes pini (Brot.) Fr.)
Red rot
Stereum sanguinolentum (Alb. & Schwein.:Fr.) Fr.—1, 48, 54
     (syns. Haematostereum sanguinolentum (Alb. & Schwein.:Fr.) Pouzar; Stereum balsameum Peck)
White stringy rot
Resinicium bicolor (Alb. & Schwein.:Fr.) Parmasto1, 61

Stem Rusts

Appalachian blister rust
Cronartium appalachianum Hepting—69
Comandra blister rust
Cronartium comandrae Peck—1, 7, 14, 20, 22, 26, 52, 64
Eastern gall rust
Cronartium quercuum f. sp. banksianae Burds. & G. A. Snow—2
Fusiform rust
Cronartium quercuum f. sp. fusiforme Burds. & G. A. Snow—1, 9, 23, 64
     (syn. C. fusiforme (Arthur & F. Kern) Hedgc. & N. R. Hunt)
Limb rust
Cronartium arizonicum Cummins—4, 15, 17, 19, 24, 29, 52
     (syn. Peridermium filamentosum Peck)
Mistletoe blister rust
Peridermium bethelii Hedgc. & Long—14, 52
Pine blister rust
Cronartium himalayense Bagchee—58
Pine-to-pine soft pine rust
Endocronartium sahoanum M. Imazu & Kakish.—53
E. yamabense (Saho & I. Takah.) V. Paclt—53
Pine twist rust
Melampsora populnea (Pers.) P. Karst.—14, 28, 38, 43, 50, 51, 61, 62
     (syn. M.pinitorqua Rostr.)
Pinyon blister rust
Cronartium occidentale Hedgc., Bethel & N. Hunt—8, 37
Resin top disease
Cronartium flaccidum (Alb. & Schwein.) G. Winter—8, 16, 28, 31, 33, 35, 38, 41, 43, 46, 50, 51, 52, 53, 57, 62, 63, 65, 66, 68, 70, 71
     (syn. C. asclepiadeum (Willd.) Fr. var. thesii Berk.)
Stalactiform blister rust
Cronartium coleosporioides Arthur—1, 7, 8
     (syn. Peridermium stalactiforme Arthur & F. Kern)
Sweetfern blister rust
Cronartium comptoniae Arthur—1, 7, 8, 35, 42, 52, 54, 55, 56, 62, 64
Western gall rust
Endocronartium harknessii (J. P. Moore) Y. Hirats.—7, 14, 41, 42, 43, 50, 52, 54, 62
syn. Peridermium harknessii J. P. Moore)
White pine blister rust
Cronartium ribicola J. C. Fisch.—1, 3, 26, 32, 40, 61

Diseases of Pseudotsuga spp. (Douglas-Fir)

1. Pseudotsuga sp.
2. P. menziesii (Douglas-fir)
3. P. macrocarpa (bigcone Douglas-fir)

Cankers and Twig Blights

Cytospora cankers and dieback
Cytospora abietis Sacc.—2
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—1, 2
     (syn. Leucostoma kunzei (Fr.) Munk)
Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—2
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—2
Lachnellula canker
Lachnellula pseudotsugae (Hahn) Dennis—2
Phacidium canker
Allantophomopsiella pseudotsugae (M. Wilson) Crous—2
     (syns. Phacidiopycnis pseudotsugae (M. Wilson) G. G. Hahn; Phacidium coniferarum (Hahn) DiCosmo, Nag Raj & Kendr.)
Phomopsis canker
Phomopsis spp.—2
Pitch canker
Fusarium circinatum Nirenberg & O’Donnell—2
     (syns. F. lateritium f. sp. pini Hepting; F. moniliforme var. subglutinans Wollenw. & Reinking; F. subglutinans f. sp. pini J. C. Correll et al.; Gibberella circinata Nirenberg & O’Donnell)
Scleroderris canker
Gremmeniella abietina (Lagerb.) M. Morelet—1, 2
     (syns. Ascocalyx abietina (Lagerb.) Schläpf.-Bernh; Brunchorstia pinea (P. Karst.) Höhn.; Scleroderris lagerbergii Gremmen)
Sclerophoma shoot dieback
Sydowia polyspora (Bref. & Tavel) E. Müll.—2
Other canker and twig blight pathogens
Coccomyces pseudotsugae A. Funk—2
Dermea boycei (Dearn.) Rossman—2
     (syn. Dermea pseudotsugae A. Funk)
Diaporthe lokoyae A. Funk—2
syn. Phomopsis lokoyae Hahn)
Durandiella pseudotsugae A. Funk—2

Diseases with Insect Vectors

Black stain root disease
Leptographium wageneri var. pseudotsugae T. C. Harr. & F. W. Cobb—2
Procerum root disease
Leptographium procerum W. B. (Kendr.) M. J. Wingf.—2
     (syn. Verticicladiella procera W. B. Kendr.)
Sirex–Amylostereum rot
Amylostereum areolatum (Chaillet ex Fr.:Fr.) Boidin ex J. Erikss., Hjortstam & Ryvarden—2
A. chailletii (Pers.:Fr.) Boidin—2
     (syn. Stereum chailletii (Pers.:Fr.) Fr.)

Foliage Diseases

Black mildew
Rasutoria pseudotsugae (V. A. M. Mill. & Bonar) M. E. Barr—2
Botrytis blight
Botrytis cinerea Pers.:Fr.—2
Rhabdocline needle cast
Rhabdocline epiphylla (A. K. Parker & J. Reid) J. K. Stone & D. S. Gernandt—2
R. oblonga (A. K. Parker & J. Reid) J. K. Stone & D. S. Gernandt—2
R. obovata (A. K. Parker & J. Reid) J. K. Stone & D. S. Gernandt—2
R. pseudotsugae Syd.—2
R. weirii A. K. Parker & J. Reid—2, 3
Rhizosphaera needle cast in Christmas trees
Rhizosphaera kalkhoffii Bubák—1
Swiss needle cast
Nothophaeocryptopus gaeumannii (T. Rohde) Videira, C. Nakash., U. Braun & Crous—2, 3
     (syns. Adelopus gaeumannii T. Rohde; Phaeocryptopus gaeumannii (T. Rohde) Petr.)
Web blight
Rhizoctonia spp.—2
Other foliage pathogens
Melampsora occidentalis H. Jacks.—2
Melampsoridium sp.—2

Parasitic Plant

Douglas-fir dwarf mistletoe
Arceuthobium douglasii—1, 2

Phytophthora Diseases

Phytophthora root rot
Phytophthora pseudotsugae Hamm & E. M. Hans.—2
P. sansomeana E.M. Hansen—2
P. taxon kelmania—2
Ramorum disease of larch
Phytophthora ramorum Werres, De Cock, & Man in ’t Veld—2
Red needle cast
Phytophthora pluvialis Reeser, W. Sutton, & E. Hansen—2

Root Rots

Armillaria root disease
Armillaria ostoyae (Romagn.) Herink—2
     (syns. Armillaria mellea var. obscura Gillet; Armillaria solidipes Peck; Armillariella obscura (Schaeff.) Romagn.; Armillariella ostoyae Romagn.)
Heterobasidion root and butt rot
Heterobasidion abietinum Niemelä & Korhonen—2
H. annosum (Fr.:Fr.) Bref. sensu stricto—2
H. irregulare Garbelotto & Otrosina—2
H. occidentale Otrosina & Garbelotto—1, 2, 3
     (syns. Fomes annosus (Fr.:Fr.) Cooke.; Fomitopsis annosa (Fr.:Fr.) P. Karst.; H. annosum (Fr.:Fr.) Bref.; Polyporus annosus Fr.:Fr.; Spiniger meineckellus (A. J. Olson) Stalpers; Trametes radiciperda R. Hartig)
H. parviporum Niemelä & Korhonen—2
Laminated root rot
Coniferiporia sulphurascens (Pilát) L. W. Zhou & Y. C. Dai—2
     (syns. Inonotus sulphurascens (Pilát) M. J. Larsen, Lombard, & J. W. Clark; Phellinidium sulphurascens (Pilát) Y. C. Dai; Phellinus sulphurascens Pilát)
Red-brown butt rot
Phaeolus schweinitzii (Fr.:Fr.) Pat.—2
     (syn. Polyporus schweinitzii Fr.:Fr.)
Rhizina root disease
Rhizina undulata Fr.:Fr.—2
     (syn. R. inflata (Schaeff.) P. Karst.)
Other root rot pathogen
Sparassis crispa (Wulfen:Fr.) Fr.—2
     (syn. S. radicata Weir)

Stem Decays

Red rot
Stereum sanguinolentum (Alb. & Schwein.:Fr.) Fr.—2
     (syns. Haematostereum sanguinolentum (Alb. & Schwein.:Fr.) Pouzar; Stereum balsameum Peck)
Rust-red stringy rot
Echinodontium tinctorium (Ellis & Everh.) Ellis & Everh.—2
White stringy rot
Resinicium bicolor (Alb. & Schwein.:Fr.) Parmasto2
Yellow-brown top rot
Fomitopsis cajanderi (P. Karst.) Kotl. & Pouzar—2
     (syns. Fomes cajanderi Weir; F. subroseus (Weir) Overh.; Trametes carnea Wettst.; T. subrosea Weir,)

Stem Rust

Pine twist rust
Melampsora populnea (Pers.) P. Karst.—2
     (syn. M. pinitorqua Rostr.)

Diseases of Sequoia, Sequoiadendron, and Metasequoia spp. (Redwood and Sequoia)

1. Sequoia sp.
2. Sequoia sempervirens (coast redwood)
3. Sequoiadendron sp.
4. Sequoiadendron giganteum (giant sequoia)
5. Metasequoia glyptostroboides (dawn redwood)

Cankers and Twig Blights

Cypress canker
Seiridium cardinale (W. Wagener) B. Sutton & I. Gibson—4
     (syn. Coryneum cardinale W. Wagener)
S. cupressi (Guba) Boesew.—4
     (syn. Cryptostictis cupressi Guba)
S. unicorne (Cooke & Ellis) B. Sutton—4
Cytospora cankers and dieback
Cytospora abietis Sacc.—2, 5
     (syn. Valsa abietis (Fr.:Fr))
Other canker and twig blight pathogen
Diaporthe juniperivora (G. G. Hahn) Rossman & Udayanga—3
     (syn. Phomopsis juniperivora G. G. Hahn)

Foliage Diseases

Cercospora needle blight
Passalora sequoiae (Ellis & Everh.) Y. L. Guo & W. H. Hsieh—1, 3
     (syns. Asperisporium sequoiae (Ellis & Everh.) B. Sutton & Hodges; Cercospora sequoiae Ellis & Everh.)
Rhizosphaera needle cast
Rhizosphaera kalkhoffii Bubák—2
Other foliage pathogen
Ceriporiopsis rivulosa (Berk. & M.A. Curtis) Gilb. & Ryvarden—1
     (syn. Poria albipellucida D. V. Baxter)

Root Rot

Heterobasidion root and butt rot
Heterobasidion irregulare Garbelotto & Otrosina—1, 3
H. occidentale Otrosina & Garbelotto—1, 3
     (syns. Fomes annosus (Fr.:Fr.) Cooke.; Fomitopsis annosa (Fr.:Fr.) P. Karst.; H. annosum (Fr.:Fr.) Bref.; Polyporus annosus Fr.:Fr.; Spiniger meineckellus (A. J. Olson) Stalpers; Trametes radiciperda R. Hartig)

Diseases of Taxus spp. (Yew)

1. Taxus sp.
2. T. brevifolia (Pacific yew)

Cankers and Twig Blight

Canker and twig blight
Diaporthe juniperivora (G. G. Hahn) Rossman & Udayanga—1
     (syn. Phomopsis juniperivora G. G. Hahn)

Foliage Diseases

Black mildew
Asteridiella pitya (Sacc.) Hansf.—1
Snow blight
Phacidium dearnessii DiCosmo, Nag Raj, & Kendr.—1
P. taxicola Dearn. & House—1

Phytophthora Disease

Port Orford cedar root disease
Phytophthora lateralis Tucker & Milbrath—2

Diseases of Thuja spp. (Arborvitae)

1. Thuja sp.
2. T. occidentalis (eastern arborvitae)
3. T. orientalis (Oriental arborvitae)
4. T. plicata (western redcedar)

Cankers and Twig Blights

Cypress canker
Seiridium cardinale (W. Wagener) B. Sutton & I. Gibson—1, 2, 3
     (syn. Coryneum cardinale W. Wagener)
S. cupressi (Guba) Boesew.—4
     (syn. Cryptostictis cupressi Guba)
S. unicorne (Cooke & Ellis) B. Sutton—4
Cytospora cankers and dieback
Cytospora abietis Sacc.—4
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—4
     (syn. Leucostoma kunzei (Fr.) Munk)
Diplodia shoot blight and canker
Diplodia sapinea (Fr.) Fuckel—1
     (syns. Diplodia pinea (Desm.) J. Kickx fil.; Macrophoma pinea (Desm.) Syd. & Petr.; M. sapinea (Fr.:Fr.) Petr.; Sphaeria pinea Desm.; Sphaeria sapinea Fr.:Fr.; Sphaeropsis sapinea (Fr.:Fr.) Dyko & B. Sutton)
D. scrobiculata J. de Wet, Slippers & M. J. Wingf.—1
Sclerophoma shoot dieback
Sydowia polyspora (Bref. & Tavel) E. Müll.—1
Thyronectria canker
Thyronectria balsamea (Cooke & Peck) Seeler—2
     (syns. Nectria balsamea Cooke & Peck; Pleonectria balsamea (Cooke & Peck) Lar. N. Vassiljeva)
Other canker and twig blight pathogen
Kabatina juniperi R. Schneid. & Arx—1

Foliage Diseases

Cedar leaf blight
Didymascella thujina (E. J. Durand) Maire—2, 4
     (syn. Keithia thujina E. J. Durand)
Cercospora needle blight
Passalora sequoiae (Ellis & Everh.) Y. L. Guo & W. H. Hsieh—1
     (syns. Asperisporium sequoiae (Ellis & Everh.) B. Sutton & Hodges; Cercospora sequoiae Ellis & Everh.)
Other foliage pathogen
Pseudocercospora thujina (Dearness) U. Braun & C. Nakash.—4
     (syn. Stigmina thujina (Dearn.) B. Sutton)

Phytophthora Disease

Port Orford cedar root disease
Phytophthora lateralis Tucker & Milbrath—2, 4

Root Rots

Cedar laminated butt rot
Coniferiporia weirii (Murrill) L. W. Zhou & Y. C. Dai—4
     (syns. Inonotus weirii (Murrill) Kotl. & Pouzar; Phellinidium weirii (Murrill) Y. C. Dai; Phellinus weirii (Murrill) Gilb.; Poria weirii (Murrill) Murrill)
White stringy rot
Resinicium bicolor (Alb. & Schwein.:Fr.) Parmasto1

Diseases of Tsuga spp. (Hemlock)

1. Tsuga sp.
2. T. canadensis (eastern hemlock)
3. T. caroliniana (Carolina hemlock)
4. T. diversifolia (northern Japanese hemlock)
5. T. heterophylla (western hemlock)
6. T. mertensiana (mountain hemlock)

Canker and Twig Blights

Cytospora cankers and dieback
Cytospora abietis Sacc.—1
     (syn. Valsa abietis (Fr.:Fr))
C. kunzei Sacc.—2
     (syn. Leucostoma kunzei (Fr.) Munk)
Sclerophoma shoot dieback
Sydowia polyspora (Bref. & Tavel) E. Müll.—5
Sirococcus tip blight
Sirococcus tsugae Rossman, Castl., D. F. Farr & Stanosz—1
Other canker and twig blight pathogens
Diaporthe juniperivora (G. G. Hahn) Rossman & Udayanga—1
     (syn. Phomopsis juniperivora G. G. Hahn)
Discocainia treleasei (Sacc.) J. Reid & A. Funk—1
     (syn. Atropellis treleasei (Sacc.) Zeller & Goodd.)
Diplodia tsugae (A. Funk) A. J. L. Phillips & A. Alves—5
     (syn. Botryosphaeria tsugae A. Funk)
Therrya tsugae A. Funk—5

Diseases of Cones and Seeds

Hemlock cone rust
Hericium abietis (Weir ex Hubert) K. A. Harrison—6
     (syn. Hydnum abietis Weir ex Hubert)
Melampsora abietis-canadensis C. A. Ludw. ex Arthur—2, 3
M. farlowii (Arthur) Davis—2, 3

Disease with Insect Vectors

Black stain root disease
Leptographium. wageneri—2
L. wageneri var. ponderosum (T. C. Harr. & F. W. Cobb) T. C. Harr. & F. W. Cobb—6

Foliage Diseases

Black mildew
Rasutoria tsugae (Dearn.) M. E. Barr—2, 5, 6
Rhizosphaera needle cast
Rhizosphaera spp.—1
R. oudemansii Maubl.—1
R. pini (Corda) Maubl.—4
Web blight
Rhizoctonia spp.—5, 6
Other foliage pathogens
Fabrella tsugae (Farl.) Kirschst.—2, 5
     (syn. Didymascella tsugae (Farl.) Maire)
Korfia tsugae (Cash & R.W. Davidson) J. Reid & Cain—2

Parasitic Plants

Dwarf mistletoes
Arceuthobium laricis—6
A. tsugense subsp. amabilae—6
A. tsugense subsp. mertensianae—6
A. tsugense subsp. tsugense—5
Leafy mistletoe
Taxillus kaempferi—1

Phytophthora Disease

Ramorum disease of larch
Phytophthora ramorum Werres, De Cock, & Man in ’t Veld—5

Root Rots

Heterobasidion root and butt rot
Heterobasidion abietinum Niemelä & Korhonen—1
H. occidentale Otrosina & Garbelotto—1, 5
     (syns. Fomes annosus (Fr.:Fr.) Cooke.; Fomitopsis annosa (Fr.:Fr.) P. Karst.; H. annosum (Fr.:Fr.) Bref.; Polyporus annosus Fr.:Fr.; Spiniger meineckellus (A. J. Olson) Stalpers; Trametes radiciperda R. Hartig)
H. parviporum Niemelä & Korhonen—1
Laminated root rot
Coniferiporia sulphurascens (Pilát) L. W. Zhou & Y. C. Dai—6
     (syns. Inonotus sulphurascens (Pilát) M. J. Larsen, Lombard, & J. W. Clark; Phellinidium sulphurascens (Pilát) Y. C. Dai; Phellinus sulphurascens Pilát)
Rhizina root disease
Rhizina undulata Fr.:Fr.—5
     (syn. R. inflata (Schaeff.) P. Karst.)
Other root rot pathogen
Perenniporia subacida (Peck) Donk.—1
     (syn. Poria subacida (Peck) Sacc.)

Stem Decays

Fir hydnum
Hericium abietis (Weir ex Hubert) K. A. Harrison—1
     (syn. Hydnum abietis Weir ex Hubert)
Red ring rot
Porodaedalea pini (Brot.) Murrill sensu latu—1
     (syns. Fomes pini (Thore) P. Karst.; Phellinus pini (Brot.) Bondartsev & Singer; Trametes pini (Brot.) Fr.)
Rust-red stringy rot
Echinodontium tinctorium (Ellis & Everh.) Ellis & Everh.—1, 5
White stringy rot
Resinicium bicolor (Alb. & Schwein.:Fr.) Parmasto1