| 2251022 |
Cytospora cankers |
Cytospora spp. |
infected shoot |
| 2251020 |
Cytospora cankers |
Cytospora spp. |
sunken necrotic area |
| 2251085 |
bear |
Ursus spp. |
claw marks on tree bole |
| 2251097 |
lightning |
|
sprouts on trunk following lightning strike |
| 2251021 |
Cytospora cankers |
Cytospora spp. |
canker injury |
| 2254003 |
larch casebearer |
Coleophora laricella |
stand level feeding damage |
| 2254009 |
European pine shoot moth |
Rhyacionia buoliana |
male |
| 2254012 |
cooley spruce gall adelgid |
Adelges cooleyi |
mass |
| 2254013 |
cooley spruce gall adelgid |
Adelges cooleyi |
aphid mass covered with white waxy coating, |
| 2254007 |
Douglas-fir needle midge |
Contarinia pseudotsugae |
on fir |
| 2251100 |
smaller European elm bark beetle |
Scolytus multistriatus |
|
| 2251087 |
elk |
Cervus canadensis |
feeding |
| 2251090 |
laminated root disease |
Phellinus weirii |
yellow shrubs filling gaps caused by conifer mortality |
| 2251076 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 2251073 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
|
| 2251062 |
Strumella canker |
Urnula craterium |
on main stem |
| 2251060 |
Delphinella canker |
Delphinella balsameae |
infected tree |
| 2251058 |
pine needle cast |
Lophodermium pinastri |
severe infection |
| 2251049 |
Dothistroma needle blight |
Mycosphaerella pini |
|
| 2251040 |
Douglas-fir needlecast |
Rhabdocline pseudotsugae |
close-up view of symptoms on Douglas-fir |
| 2251036 |
larch needle cast |
Hypodermella laricis |
diseased needles |
| 2251037 |
larch needle cast |
Hypodermella laricis |
needles with fruiting bodies |
| 2251019 |
Dermea canker |
Dermea pseudotsugae |
canker with bark removed |
| 2251013 |
Atropellis canker |
Atropellis piniphila |
close-up view of branch canker |
| 2251010 |
stalactiform blister rust |
Cronartium coleosporioides |
stem canker |
| 2250094 |
white pine blister rust |
Cronartium ribicola |
infested stand |
| 2250095 |
comandra blister rust |
Cronartium comandrae |
infested stand |
| 2250027 |
root diseases and rots |
|
in crown of tree |
| 2253071 |
chemicals |
|
Foliage "burn" due to dimethoate insecticide. |
| 2251091 |
laminated root disease |
Phellinus weirii |
decay in cedar |
| 2251054 |
lodgepole pine needle cast |
Lophodermella concolor |
symptomatic tree |
| 2251018 |
Dermea canker |
Dermea pseudotsugae |
|
| 2251071 |
Cytospora canker |
Valsa sordida |
stem canker |
| 2251074 |
Marssonina blight of poplar |
Marssonina populi |
infected aspen leaves |
| 2251070 |
Cytospora canker |
Valsa sordida |
|
| 2251061 |
Septoria leaf spot and canker |
Septoria populicola |
leaf spots on cottonwood |
| 2251044 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
infected foliage on left and healthy foliage on right |
| 2251041 |
larch needle cast |
Hypodermella laricis |
on old needles and new growth |
| 2250085 |
red heart of pine |
Phellinus pini |
on larch |
| 2251023 |
Cytospora cankers |
Cytospora spp. |
|
| 2252010 |
hispidus canker |
Inonotus hispidus |
stem canker |
| 2251095 |
leaf blister of poplar |
Taphrina populina |
leaf blisters |
| 2250100 |
western gall rust |
Endocronartium harknessii |
on ponderosa pine |
| 2251031 |
Dasyscypha cankers |
Lachnellula spp. |
stem canker |
| 2251079 |
tar spot of maple |
Rhytisma acerinum |
early stage on maple leaves |
| 2251072 |
black rot |
Ceratocystis fimbriata |
tree windthrown at canker |
| 2251078 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 2252001 |
Dutch elm disease |
Ophiostoma ulmi |
vascular discoloration in winged elm |
| 2251030 |
Dasyscypha cankers |
Lachnellula spp. |
terminal shoot dieback |
| 2250075 |
gray molds |
Botrytis spp. |
symptoms on Englemann spruce |
| 2250056 |
black stain root disease |
Ophiostoma wageneri |
stained roots of Douglas-fir |
| 2251098 |
Dutch elm disease |
Ophiostoma ulmi |
crown symptoms |
| 2252015 |
bacterial wetwood |
Enterobacter nimipressuralis |
canker on Siberian elm |
| 2252004 |
oak wilt |
Ceratocystis fagacearum |
leaf symptoms |
| 2251053 |
Diplodia tip blight |
Diplodia pinastri |
infected foliage on European Black (Austrian) pine |
| 2251014 |
Atropellis canker |
Atropellis piniphila |
on lodgepole pine |
| 2251038 |
tar spot needlecast |
Davisomycella ampla |
Douglas-fir Christmas tree plantation |
| 2253086 |
Ips engraver beetles |
Ips spp. |
attacking regeneration trees in stand |
| 2251017 |
Dermea canker |
Dermea pseudotsugae |
|
| 2251059 |
pine needle cast |
Lophodermium pinastri |
infected needles |
| 2251077 |
oak anthracnose |
Apiognomonia errabunda |
leaf symptoms |
| 2251034 |
larch needle cast |
Hypodermella laricis |
large area of injury |
| 2251033 |
larch needle cast |
Hypodermella laricis |
symptomatic needles |
| 2251066 |
white heartwood rot |
Phellinus tremulae |
sections through decayed stem |
| 2252017 |
Irpex canker |
Spongipellis pachyodon |
|
| 2251028 |
Dasyscypha cankers |
Dasyscyphus spp. |
stem canker and fruiting bodies |
| 2250040 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
brown cubical root and butt decay, and fruiting bodies |
| 2251032 |
Dasyscypha cankers |
Dasyscyphus spp. |
stem canker on young tree |
| 2250037 |
Armillaria root rot |
Armillaria solidipes |
mycelial fan under bark at base of tree |
| 2251024 |
Cytospora cankers |
Cytospora spp. |
|
| 2250069 |
Pythium diseases |
Pythium spp. |
in nursery of grand fir |
| 2251039 |
Douglas-fir needlecast |
Rhabdocline pseudotsugae |
advanced symptoms at Christmas Tree Plantation |
| 2250068 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
root swelling/lesion |
| 2253020 |
balsam woolly adelgid |
Adelges piceae |
|
| 2254010 |
rusty tussock moth |
Orgyia antiqua |
male |
| 2180083 |
spruce beetle |
Dendroctonus rufipennis |
spraying |
| 2251084 |
bear |
Ursus spp. |
stripping bark |
| 2252018 |
Irpex canker |
Spongipellis pachyodon |
cross-section of canker showing decayed wood |
| 2253021 |
kermes scales |
Kermes spp. |
|
| 2253097 |
prescribed fire |
|
|
| 2251099 |
Verticillium wilt |
Verticillium albo atrum |
crown with wilt symptoms |
| 2252016 |
Perenniporia canker |
Perenniporia ellisiana |
and canker |
| 2252012 |
Septoria leaf spot and cankers |
Septoria spp. |
shoot canker |
| 2251096 |
poplar rust |
Melampsora medusae |
|
| 2251088 |
red squirrel |
Tamiasciurus hudsonicus |
girdled larch |
| 2251026 |
Atropellis canker |
Atropellis piniphila |
stained wood beneath canker |
| 2251027 |
Dasyscypha cankers |
Lachnellula spp. |
|
| 2251029 |
Dasyscypha cankers |
Lachnellula spp. |
terminal shoot infections |
| 2251068 |
artist's conk |
Ganoderma applanatum |
underside of fruiting body, see also 2251069 |
| 2251069 |
artist's conk |
Ganoderma applanatum |
upper side of fruiting body, see also 2251068 |
| 2251043 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
close-up view of infected needle |
| 2250001 |
American dwarf mistletoe |
Arceuthobium americanum |
control burn in lodgepole pine |
| 2253072 |
chemicals |
|
Foliage "burn" due to dimethoate insecticide. |
| 2253067 |
desication (wind burn) |
|
Dessication injury to top of trees above winter snow pack. |
| 2250042 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
old fruiting bodies |
| 2250043 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
old, weathered fruiting bodies |
| 2251016 |
Atropellis canker |
Atropellis piniphila |
cross-section of canker |
| 2251011 |
stalactiform blister rust |
Cronartium coleosporioides |
cross-section of canker |
| 2251012 |
Atropellis canker |
Atropellis piniphila |
|
| 2251003 |
western gall rust |
Endocronartium harknessii |
cankers |
| 2251005 |
western gall rust |
Endocronartium harknessii |
branch gall |
| 2251006 |
stalactiform blister rust |
Cronartium coleosporioides |
alternate pedicularis host |
| 2251007 |
stalactiform blister rust |
Cronartium coleosporioides |
aecia |
| 2251008 |
stalactiform blister rust |
Cronartium coleosporioides |
telia on alternate Castilleja host |
| 2251009 |
stalactiform blister rust |
Cronartium coleosporioides |
Castelloia alternate host |
| 2251086 |
deer |
|
antler rubs |
| 2251081 |
moose |
Alces alces |
bull moose feeding on willow |
| 2253017 |
pesticides |
|
medicap insecticide plug being driven into tree bole |
| 2253100 |
misc. forestry picture |
|
diagram of Hercon pheromone dispenser |
| 2253032 |
pine tussock moth |
Dasychira pinicola |
|
| 2251035 |
larch needle cast |
Hypodermella laricis |
diseased needles |
| 2253037 |
pesticides |
|
helicopter spray |
| 2254011 |
rusty tussock moth |
Orgyia antiqua |
|
| 2254008 |
Douglas-fir needle midge |
Contarinia pseudotsugae |
|
| 2254004 |
black pineleaf scale |
Dynaspidiotus californica |
on ponderosa pine |
| 2254005 |
black pineleaf scale |
Dynaspidiotus californica |
on ponderosa pine |
| 2254006 |
gall midges |
|
Needles "opened" to expose larvae taken |
| 2253016 |
pesticides |
|
Medicap plug |
| 2250034 |
Armillaria root rot |
Armillaria solidipes |
at base of tree |
| 2250035 |
Armillaria root rot |
Armillaria solidipes |
mycelial fan under bark at base of tree |
| 2250036 |
Armillaria root rots |
Armillaria spp. |
longitudinal section of root showing resin soaking |
| 2250044 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
blowdown on infected trees |
| 2250045 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
mortality center |
| 2250046 |
laminated root disease |
Phellinus weirii |
cross-section of trunk decay and stain |
| 2250048 |
laminated root disease |
Phellinus weirii |
stained wood |
| 2250049 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
root gall |
| 2250051 |
annosum root disease |
Heterobasidion annosum |
yellow stringy decay of ponderosa pine root |
| 2250054 |
annosum root disease |
Heterobasidion annosum |
stain and mycelium on Douglas fir |
| 2250055 |
black stain root disease |
Ophiostoma wageneri |
stained wood in roots
planted trees |
| 2250038 |
laminated root disease |
Phellinus weirii |
yellow laminated decay |
| 2250059 |
Perenniporia decay |
Perenniporia subacida |
decayed wood |
| 2250060 |
Perenniporia decay |
Perenniporia subacida |
|
| 2250061 |
annosum root disease |
Heterobasidion annosum |
disease center in stand of true fir |
| 2250062 |
Armillaria root rot |
Armillaria solidipes |
decayed roots of Douglas fir |
| 2250063 |
laminated root disease |
Phellinus weirii |
|
| 2250064 |
Armillaria root rot |
Armillaria solidipes |
|
| 2250076 |
gray molds |
Botrytis spp. |
on ponderosa pine, nursery pest |
| 2250077 |
Fusarium cortical stem rot |
Fusarium avenaceum |
post-emergence symptoms, nursery pest |
| 2250078 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
infected seedlings, nursery pest |
| 2250079 |
indian paint fungus |
Echinodontium tinctorium |
cross-section of tree: fibrous yellow/brown
decay |
| 2250080 |
indian paint fungus |
Echinodontium tinctorium |
|
| 2250081 |
indian paint fungus |
Echinodontium tinctorium |
longitudinal section of Douglas-fir: decay discolor. |
| 2250082 |
indian paint fungus |
Echinodontium tinctorium |
on grand fir |
| 2250083 |
indian paint fungus |
Echinodontium tinctorium |
longitudinal section of fruiting body |
| 2250084 |
red-belted fungus |
Fomitopsis pinicola |
|
| 2250041 |
Schweinitzii root and butt disease |
Phaeolus schweinitzii |
underside of fruiting bodies |
| 2250070 |
Fusarium cortical stem rot |
Fusarium avenaceum |
damping-off (left) and heat injury (right),
forest nursery pest |
| 2250071 |
cranberry girdler |
Chrysoteuchia topiaria |
in Douglas-fir in nursery |
| 2250072 |
Diplodia blight |
Sphaeropsis sapinea |
tip dieback on ponderosa pine |
| 2250073 |
Phomopsis blight |
Phomopsis juniperivora |
tip dieback |
| 2250074 |
Fusarium cortical stem rot |
Fusarium avenaceum |
post-emergence symptoms, nursery pest |
| 2250096 |
comandra blister rust |
Cronartium comandrae |
aecia |
| 2250097 |
pine needle rusts |
Coleosporium spp. |
mature aecia on needles |
| 2250086 |
red-belted fungus |
Fomitopsis pinicola |
|
| 2250087 |
red heart of pine |
Phellinus pini |
swellings on larch/punk knots |
| 2250088 |
mechanical |
|
increment boring damage in pine |
| 2250089 |
white pine blister rust |
Cronartium ribicola |
ribes/inocolum |
| 2250091 |
white pine blister rust |
Cronartium ribicola |
aecia |
| 2250092 |
white pine blister rust |
Cronartium ribicola |
aecia |
| 2250093 |
white pine blister rust |
Cronartium ribicola |
aecia on white bark pine |
