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Subject Scientific Name Images
air pollutants 2
Aleurodiscus cankers Aleurodiscus spp. 1
American dwarf mistletoe Arceuthobium americanum 1
annosum root disease Heterobasidion annosum 97
Armillaria root rot Armillaria mellea 1
Armillaria root rot Armillaria solidipes 21
Armillaria root rot Armillaria tabescens 4
Armillaria root rots Armillaria spp. 29
Atropellis canker Atropellis pinicola 2
Atropellis canker Atropellis piniphila 12
Atropellis canker Atropellis spp. 2
balsam woolly adelgid Adelges piceae 6
bitter rot and anthracnose Colletotrichum gloeosporioides 1
black rot Ceratocystis fimbriata 1
black stain root disease Ophiostoma wageneri 23
blue stain 3
blue stain Ophiostoma ips 2
blue stain Ophiostoma piceae 1
brown felt blight Herpotrichia juniperi 5
brown felt blight of pines Neopeckia coulteri 6
Brown needle blight of pine Mycosphaerella gibsonii 1
brown spot Alternaria alternata 2
brown spot needle blight of pine Mycosphaerella dearnessii 41
burl and decay 3
Caliciopsis canker Caliciopsis pinea 1
canker 2
canker Valsa quaternata 1
cedar brown pocket rot Postia sericeomollis 2
cedar-apple rust Gymnosporangium juniperi-virginianae 2
Cenangium limb canker Cenangium ferruginosum 1
Cercospora fungi Cercospora spp. 1
charcoal rot Macrophomina phaseolina 6
chemicals 1
cherry-spruce rust Pucciniastrum areolatum 7
Chrysomyxa rust of spruce Chrysomyxa ledi 2
cold injury (low temperature) 2
comandra blister rust Cronartium comandrae 25
common snow mold Phacidium infestans 1
cone worms Dioryctria spp. 4
Cronartium gall rusts Cronartium spp. 1
crown gall Rhizobium radiobacter 3
Cryptosphaeria cankers Cryptosphaeria spp. 1
Cyclaneusma needle cast Cyclaneusma minus 3
Cylindrocladium root diseases Cylindrocladium spp. 5
Cytospora canker Cytospora pinastri 1
Cytospora canker of fir Cytospora abietis 1
Cytospora canker of spruce Valsa kunzei 6
Cytospora cankers Cytospora spp. 8
Dasyscypha cankers Dasyscyphus spp. 2
Dasyscypha cankers Lachnellula spp. 3
decay 4
Delphinella canker Delphinella balsameae 1
Delphinella shoot blight Delphinella abietis 3
Dermea canker Dermea pseudotsugae 3
Diplodia blight Sphaeropsis sapinea 125
Diplodia tip blight Diplodia pinastri 9
Diplodia tip blights Diplodia spp. 20
Dothistroma needle blight Mycosphaerella pini 24
Douglas-fir needlecast Rhabdocline pseudotsugae 17
drought 3
dry rot Serpula lacrymans 1
dwarf mistletoes Arceuthobium spp. 3
eastern dwarf mistletoe Arceuthobium pusillum 1
eastern pine gall rust Cronartium quercuum 11
ectomycorrhizae 1
Elytroderma needle cast of pine Elytroderma deformans 12
European larch canker Lachnellula willkommii 7
European mistletoe Viscum album 2
Eutypella canker Eutypella parasitica 1
fall webworm Hyphantria cunea 2
fertilization 1
fir and spruce canker 5
fir broom rust Melampsorella caryophyllacearum 18
fir mistletoe Phoradendron pauciflorum 1
fir needle casts Lirula spp. 1
fir-fern rust Uredinopsis spp. 1
fir-fireweed rust Pucciniastrum epilobii 2
fletcher scale Parthenolecanium fletcheri 2
flooding/high water 1
frost and winter injury (general) 5
Fusarium cortical stem rot Fusarium avenaceum 3
Fusarium wilts, blights, rots and damping-off Fusarium spp. 10
fusiform rust Cronartium quercuum f.sp. fusiforme 37
gall rust of jack pine Cronartium quercuum f.sp. banksianae 2
gall rust of Virginia pine Cronartium quercuum f.sp. virginianae 1
galls 1
Gibberella canker Gibberella baccata 1
gray mold Botrytis cinerea 20
gray molds Botrytis spp. 3
Gynosporanium rusts Gymnosporangium spp. 4
hackberry nipplegall maker Pachypsylla celtidismamma 2
heat 3
hemlock rust Melampsora farlowii 2
Herpotrichia fungi Herpotrichia spp. 4
hispidus canker Inonotus hispidus 1
incense cedar broom rust Gymnosporangium libocedri 3
indian paint fungus Echinodontium tinctorium 4
Japanese pear rust Gymnosporangium asiaticum 3
juniper blight Cercospora sequoiae junipera 1
juniper broom rust Gymnosporangium speciosum 2
juniper witches' broom rust Gymnosporangium nidus avis 1
juniper-pear rust Gymnosporangium sabinae 2
Kabatina blight Kabatina juniperi 2
Lachnellula canker Lachnellula flavovirens 1
laminated root disease Phellinus weirii 15
larch needle cast Hypodermella laricis 6
large-spored spruce-laborador tea/needle rust Chrysomyxa ledicola 3
Leptographium root disease Leptographium procerum 21
Leptographium root disease Leptographium spp. 12
Leucostoma canker of spruce Leucostoma kunzei 3
limb rust Peridermium filamentosum 13
lodgepole pine needle cast Lophodermella concolor 5
Lophodermium needle casts Lophodermium spp. 10
Macrophoma rough bark disease Macrophoma tumefaciens 1
Medusa needle blight Davisomycella medusa 3
mistletoes Phoradendron spp. 2
Nectria canker Nectria spp. 2
needle blight of cedar Didymascella thujina 2
needle blight of hemlock Fabrella tsugae 5
needle blight of larch Meria laricis 9
needle cast Bifusella saccata 1
needle cast Lophodermium seditiosum 1
needle cast Virgella robusta 1
needle cast of Japanese larch Mycosphaerella laricis-leptolepidis 1
needle droop 1
needle rust Coleosporium tussilaginis 1
needlecast Davisomycella attenuata 1
needlecast Lophodermella montivaga 2
needlecast Meloderma desmazieri 4
needlecast Stigmina deflectens 5
Neonectria cankers Neonectria spp. 3
nitrogen deficiency 1
nuclear polyhedrosis virus Nucleopolyhedrovirus 2
nutrient deficiency 6
oak wilt Ceratocystis fagacearum 2
ozone 2
pales weevil Hylobius pales 1
pecky cypress pocket rot Stereum taxodii 1
Perenniporia decay Perenniporia subacida 1
Pestalotiopsis leaf spot Pestalotiopsis spp. 2
Phacidium fungus Phacidium coniferarum 6
Phomopsis blight Phomopsis juniperivora 12
Phomopsis cankers and twig blights Phomopsis spp. 5
Phyllosticta leaf spots Phyllosticta spp. 4
Phytophthora root and crown rots Phytophthora spp. 2
Phytophthora root disease of Port Orford cedar Phytophthora lateralis 2
Phytophthora root rot Phytophthora cinnamomi 56
pine needle cast Lophodermella cerina 13
pine needle cast Lophodermium nitens 3
pine needle cast Lophodermium pinastri 24
pine needle rust Coleosporium asterum 5
pine needle rusts Coleosporium spp. 5
pine tip blight 3
pine wilt nematode Bursaphelenchus xylophilus 5
pinyon blister rust Cronartium occidentale 13
pinyon dwarf mistletoe Arceuthobium divaricatum 1
pitch canker Fusarium circinatum 9
pitch canker Fusarium subglutinans 45
Ploioderma needle cast of pine Ploioderma lethale 1
ponderosa pine dwarf mistletoe Arceuthobium vaginatum 1
poplar rust Melampsora medusae 1
powdery mildew of oak Microsphaera alphitoides 1
Pythium diseases Pythium spp. 2
quince rust Gymnosporangium clavipes 1
red belt abiotic damage 7
red heart decay Stereum sanguinolentum 3
red heart of pine Phellinus pini 14
red root and butt rot Inonotus circinatus 5
redwood trunk rot Poria sequoiae 1
Rhabdocline needlecasts Rhabdocline spp. 4
Rhizoctonia damping-off, blight and rot Rhizoctonia solani 4
Rhizosphaera needle cast Rhizosphaera kalkhoffii 18
Rhizosphaera needle cast Rhizosphaera pini 2
root disease Onnia circinata 1
root diseases and rots 20
root problems 1
root rot Phellinus hartigii 1
sand pine root disease 5
Schweinitzii root and butt disease Phaeolus schweinitzii 13
Scleroderris canker of pine and spruce Gremmeniella abietina 50
Scleroderris canker of western firs Grovesiella abieticola 1
Scots pine Pinus sylvestris 1
seedling blight of longleaf pine Ceratobasidium spp. 5
Sirococcus blight of conifers Sirococcus conigenus 63
sooty mold 2
southern blight Sclerotium rolfsii 3
southern cone rust Cronartium strobilinum 6
southwestern white-spored gall rust Peridermium (An undescribed species) 3
spruce broom rust Chrysomyxa arctostaphyli 20
spruce coneworm Dioryctria abietella 1
spruce decline 53
spruce needle cast Lophodermium piceae 2
spruce needle cast/blight Lirula macrospora 12
spruce needle rust Chrysomyxa weirii 1
spruce needle rusts Chrysomyxa spp. 3
spruce rust Chrysomyxa abietis 1
stalactiform blister rust Cronartium coleosporioides 12
Stigmina leaf spots Stigmina spp. 3
sudden oak death Phytophthora ramorum 3
sweet fern blister rust Cronartium comptoniae 7
Swiss needle cast Phaeocryptopus gaeumannii 10
tar spot needlecast Davisomycella ampla 7
Tomentosus root disease Onnia tomentosus 6
Truncatella fungus Truncatella hartigii 1
twig dieback of larch Botryosphaeria laricina 1
twist rust Melampsora populnea 5
unknown 1
veiled polypore Cryptoporus volvatus 1
western gall rust Endocronartium harknessii 40
white laminated rot Ceriporiopsis rivulosa 1
white pine blister rust Cronartium ribicola 94
white pine needlecast Lophodermella arcuata 2
white spruce decline 1
witches broom rust Gymnosporangium nelsonii 1
witches' broom 4
wood decay Pholiota albocrenulata 1
wood decay Stereum spp. 2
wood rot fungi Trichoderma spp. 3
woolly pine scale Pseudophilippia quaintancii 2
yellow-bellied sapsucker Sphyrapicus varius 2
yellow-cedar decline 3

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