| 5492322 |
Rhizosphaera needle cast |
Rhizosphaera spp. |
Fruiting bodies developing from stomates on a spruce needle |
| 5492336 |
Rhizosphaera needle cast |
Rhizosphaera spp. |
Rhizosphaera pycnidia on spruce |
| 5492338 |
Rhizosphaera needle cast |
Rhizosphaera spp. |
Close-up view of Rhizosphaera fruiting bodies developing from stomates on a spruce needle. White caps of wax and colorless masses of spores visible on top of pycnidia. |
| 5484085 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Fruiting bodies on Easter white pine needle. |
| 5484086 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Olive brown spores. |
| 5486243 |
apple scab |
Venturia inaequalis |
Apple scab on crabapple |
| 5486045 |
maple cankers |
Stegonsporium spp. |
Conidia |
| 5486046 |
maple cankers |
Stegonsporium spp. |
Acervuli on branch |
| 5486042 |
maple cankers |
Stegonsporium spp. |
Acervuli on branch |
| 5486043 |
maple cankers |
Stegonsporium spp. |
Conidia |
| 5486044 |
maple cankers |
Stegonsporium spp. |
Vertical section of acervulus with conidia |
| 5486074 |
Entomosporium leaf spot |
Diplocarpon mespili |
Acervulus in leaf spot |
| 5492339 |
Stigmina leaf spot |
Stigmina lautii |
dark fruiting bodies developing from stomates on a blue spruce needle |
| 5492337 |
Rhizosphaera needle cast |
Rhizosphaera spp. |
Pycnidia of a Rhizosphaera sp. on a spruce needle. |
| 5486077 |
Entomosporium leaf spot |
Diplocarpon mespili |
Infected leaf |
| 5486078 |
Entomosporium leaf spot |
Diplocarpon mespili |
Infected leaf |
| 5486076 |
Entomosporium leaf spot |
Diplocarpon mespili |
Vertical section of acervulus with macroconidia and microconidia |
| 5486075 |
Entomosporium leaf spot |
Diplocarpon mespili |
Vertical section of acervulus |
| 5486073 |
Entomosporium leaf spot |
Diplocarpon mespili |
Macroconidium |
| 1603000 |
powdery mildew |
Erysiphe spp. |
|
| 5486072 |
Entomosporium leaf spot |
Diplocarpon mespili |
Microconidia and conidiophores |
| 5486071 |
Entomosporium leaf spot |
Diplocarpon mespili |
Macroconidia and microconidia |
| 5487692 |
dogwood anthracnose |
Discula destructiva |
|
| 5488287 |
needlecasts |
Davisomycella spp. |
Hysterothecia evident in symptomatic needles |
| 5488286 |
needlecasts |
Davisomycella spp. |
Hysterothecia evident in symptomatic needles |
| 5488285 |
needlecasts |
Davisomycella spp. |
Hysterothecia evident in symptomatic needles |
| 5488284 |
needlecasts |
Davisomycella spp. |
Mature asci with spores |
| 5488288 |
needlecasts |
Davisomycella spp. |
Mature ascospore with gelatinous sheath |
| 5488282 |
needlecasts |
Davisomycella spp. |
Mature ascus with spores |
| 5488283 |
needlecasts |
Davisomycella spp. |
Mature asci with spores and surrounding paraphyses |
| 5490453 |
crown rust |
Puccinia coronata |
Vertical section of aecium |
| 5411358 |
black spot of elm |
Stegophora ulmea |
leaf spots |
| 5487929 |
powdery mildew |
Oidium spp. |
powdery mildew on leaves |
| 5487930 |
powdery mildew |
Oidium spp. |
white mycelium on leaf |
| 5487928 |
powdery mildew |
Oidium spp. |
leaf necrosis |
| 5487895 |
powdery mildew |
Oidium spp. |
White mycelium on underside of leaf |
| 5487896 |
powdery mildew |
Oidium spp. |
off color foliage |
| 5487897 |
powdery mildew |
Oidium spp. |
off color foliage |
| 5487898 |
powdery mildew |
Oidium spp. |
off color foliage |
| 5487899 |
powdery mildew |
Oidium spp. |
off color foliage |
| 5487894 |
powdery mildew |
Oidium spp. |
yellowing |
| 5487884 |
Diplodia blight |
Sphaeropsis sapinea |
Tip blight |
| 5488325 |
Diplodia blight |
Sphaeropsis sapinea |
Pycnidia emerging from stem |
| 5486059 |
tar spot of maple |
Rhytisma acerinum |
Asci and paraphyses |
| 5486061 |
tar spot of maple |
Rhytisma acerinum |
Asci and paraphyses |
| 5488289 |
Lophodermium needle casts |
Lophodermium spp. |
Symptomatic infected foliage |
| 5488291 |
Lophodermium needle casts |
Lophodermium spp. |
Tip of ascus and released ascospore |
| 5488296 |
Lophodermium needle casts |
Lophodermium spp. |
Vertical section of apothecium |
| 5488339 |
Diplodia blight |
Sphaeropsis sapinea |
Pycnidia emerging at base of needle |
| 5488254 |
pine needle rusts |
Coleosporium spp. |
Vertical section of aecium |
| 5488251 |
pine needle rusts |
Coleosporium spp. |
Aecium on needle |
| 5488255 |
pine needle rusts |
Coleosporium spp. |
Vertical section of aecium |
| 5488257 |
pine needle rusts |
Coleosporium spp. |
Vertical section of aecium |
| 5488258 |
pine needle rusts |
Coleosporium spp. |
A section of the aecial peridium showing the whitish peridial cells. The yellow color is from aeciospores. |
| 5488259 |
pine needle rusts |
Coleosporium spp. |
Surface view of aeciospores |
| 5488260 |
pine needle rusts |
Coleosporium spp. |
Sectional view of aeciospores |
| 5488202 |
powdery mildew |
Golovinomyces cichoracearum |
Ruptured chasmothecium with multiple asci |
| 5488337 |
Diplodia blight |
Sphaeropsis sapinea |
Symptomatic infected branch |
| 5488336 |
Diplodia blight |
Sphaeropsis sapinea |
Conidium, sectional view |
| 5488335 |
Diplodia blight |
Sphaeropsis sapinea |
Conidium, surface view |
| 5488334 |
Diplodia blight |
Sphaeropsis sapinea |
Conidiogenesis |
| 5488333 |
Diplodia blight |
Sphaeropsis sapinea |
Vertical section of pycnidium showing conidial production |
| 5488331 |
Diplodia blight |
Sphaeropsis sapinea |
Vertical section of pycnidium showing conidial production |
| 5488330 |
Diplodia blight |
Sphaeropsis sapinea |
Vertical section of pycnidium showing conidial production |
| 5488329 |
Diplodia blight |
Sphaeropsis sapinea |
Vertical section of pycnidia |
| 5488328 |
Diplodia blight |
Sphaeropsis sapinea |
Vertical section of pycnidia |
| 5488327 |
Diplodia blight |
Sphaeropsis sapinea |
Pycnidium emerging from stem |
| 5488326 |
Diplodia blight |
Sphaeropsis sapinea |
Pycnidia emerging from stem |
| 5488343 |
Diplodia blight |
Sphaeropsis sapinea |
Conidia |
| 5488342 |
Diplodia blight |
Sphaeropsis sapinea |
Vertical section of pycnidium |
| 5488340 |
Diplodia blight |
Sphaeropsis sapinea |
Immature and mature conidia on conidiophores |
| 5488338 |
Diplodia blight |
Sphaeropsis sapinea |
Symptomatic infected pine shoot |
| 5488341 |
Diplodia blight |
Sphaeropsis sapinea |
Vertical section of pycnidium. |
| 5488281 |
tar spot needlecast |
Davisomycella ampla |
Vertical section of hysterothecium showing ascus with mature spores |
| 5488280 |
tar spot needlecast |
Davisomycella ampla |
Vertical section of hysterothecium with mature asci surrounded by paraphyses |
| 5488279 |
tar spot needlecast |
Davisomycella ampla |
Vertical section of hysterothecium with asci obvious |
| 5488278 |
tar spot needlecast |
Davisomycella ampla |
Vertical section of hysterothecium showing asci and paraphyses |
| 5488277 |
tar spot needlecast |
Davisomycella ampla |
Hysterothecia on needle |
| 5488276 |
tar spot needlecast |
Davisomycella ampla |
Hysterothecium on needle |
| 5488295 |
Lophodermium needle casts |
Lophodermium spp. |
Ascospores with gelatinous sheaths obvious |
| 5488294 |
Lophodermium needle casts |
Lophodermium spp. |
Ascospores with gelatinous sheaths obvious |
| 5488293 |
Lophodermium needle casts |
Lophodermium spp. |
Asci and paraphyses. Cotton blue stain. |
| 5488292 |
Lophodermium needle casts |
Lophodermium spp. |
Asci and paraphyses. Cotton blue stain. |
| 5488290 |
Lophodermium needle casts |
Lophodermium spp. |
Asci and paraphyses. Cotton blue stain. |
| 5488237 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Ascospores within an ascus |
| 5485018 |
anthracnose |
Colletotrichum spp. |
Vertical section of acervulus showing conidiophores and conidia |
| 5488236 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Ascospores with gelatinous sheaths |
| 5488235 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Vertical section of apothecium showing ascospores (with gelatinous sheaths) and paraphyses |
| 5488234 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Vertical section of apothecium |
| 5488232 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Vertical section of apothecium showing asci and paraphyses |
| 5488231 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Vertical section of apothecium |
| 5488230 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Vertical section of apothecium showing asci and paraphyses |
| 5488229 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Vertical section of apothecia |
| 5488228 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Method of sectioning two apothecia using a glass slide |
| 5488227 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Apothecium |
| 5488249 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Ascospore with gelatinous appendages |
| 5488250 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Ascospore with gelatinous appendages |
| 5488248 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Paraphyses with oil droplets |
| 5488247 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Ascus with ascospores surrounded by paraphyses with oil droplets |
| 5488246 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Portion of ascus with ascospores surrounded by paraphyses with oil droplets |
| 5488245 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Vertical section of apothecium with trapped air bubble |
| 5488244 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Apothecium in needle |
| 5488243 |
Cyclaneusma needle cast |
Cyclaneusma minus |
Apothecium in needle |
| 5486064 |
tar spot of maple |
Rhytisma acerinum |
Apothecia in tar spot with hymenia evident (Spring) |
| 5486063 |
tar spot of maple |
Rhytisma acerinum |
Apothecia in tar spots (Spring) |
| 5486062 |
tar spot of maple |
Rhytisma acerinum |
Apothecia in tar spots (Spring) |
| 5486060 |
tar spot of maple |
Rhytisma acerinum |
Ascospore with mucilagenous appendage apparent |
| 5486058 |
tar spot of maple |
Rhytisma acerinum |
Asci |
| 5486057 |
tar spot of maple |
Rhytisma acerinum |
Ascospores with mucilagenous appendage faintly apparent |
| 5486056 |
tar spot of maple |
Rhytisma acerinum |
Vertical cross-section of apothecium with asci and paraphyses apparent |
| 5486055 |
tar spots |
Rhytisma spp. |
Vertical cross-section of apothecium with ascospores emerging |
| 5486054 |
tar spot of maple |
Rhytisma acerinum |
Vertical cross-section of apothecium with ascospores emerging |
| 5486053 |
tar spot of maple |
Rhytisma acerinum |
Vertical cross-section of apothecium with ascospores emerging |
| 5486052 |
tar spot of maple |
Rhytisma acerinum |
Apothecia in tar spot with hymenia evident (Spring) |
| 5486070 |
Entomosporium leaf spot |
Diplocarpon mespili |
Infected leaves |
| 5485280 |
oak leaf blister |
Taphrina caerulescens |
Bottom of infected leaf |
| 5485279 |
oak leaf blister |
Taphrina caerulescens |
Top of infected leaf. |
| 5485276 |
oak leaf blister |
Taphrina caerulescens |
Vertical section showing naked asci growing on leaf surface. |
| 5485274 |
oak leaf blister |
Taphrina caerulescens |
Ascus full of ascospores. |
| 5485272 |
oak leaf blister |
Taphrina caerulescens |
Vertical section showing naked asci growing on leaf surface. Ruptured ascus spilling ascospores. |
| 5485273 |
oak leaf blister |
Taphrina caerulescens |
Vertical section showing naked asci growing on leaf surface. Ruptured ascus spilling ascospores. |
| 5485271 |
oak leaf blister |
Taphrina caerulescens |
Vertical section showing naked asci growing on leaf surface. |
| 5485632 |
anthracnose |
Colletotrichum spp. |
Acervuli on leaf surface. |
| 5484507 |
Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
Conidia |
| 5485212 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Vertical section of pycnidium. |
| 5485218 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Infected leaf. |
| 5485217 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Vertical section of pycnidium. |
| 5485216 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Vertical section of pycnidium. |
| 5485215 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Vertical section of pycnidium. |
| 5485214 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Vertical section of pycnidium. |
| 5485213 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Vertical section of pycnidia. |
| 5485021 |
anthracnose |
Colletotrichum spp. |
Infected leaves. |
| 5485020 |
anthracnose |
Colletotrichum spp. |
Conidiophores producing conidia. |
| 5485019 |
anthracnose |
Colletotrichum spp. |
Vertical section of acervulus showing conidiophores and conidia. |
| 5485017 |
anthracnose |
Colletotrichum spp. |
Vertical section of acervulus showing conidiophores and conidia. |
| 5485016 |
anthracnose |
Colletotrichum spp. |
Conidia. |
| 5485014 |
anthracnose |
Colletotrichum spp. |
Vertical section of acervuli. |
| 5485015 |
anthracnose |
Colletotrichum spp. |
Vertical section of acervulus. |
| 5485013 |
anthracnose |
Colletotrichum spp. |
Vertical section of acervuli. |
| 5485012 |
anthracnose |
Colletotrichum spp. |
Acervuli evident on leaf. |
| 5484509 |
Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
Shothole symptoms |
| 5484508 |
Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
Conidium on conidiophore. |
| 5484506 |
Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
Vertical section of acervulus of Phloeosporella anamorph. |
| 5484505 |
Blumeriella leaf spot of cherry and plum |
Blumeriella jaapii |
Vertical section of acervulus of Phloeosporella anamorph. |
| 5445855 |
green alga |
Cephaleuros virescens |
5/2011 |
| 5445851 |
green alga |
Cephaleuros virescens |
3/2011; algal leafspot on magnolia. |
| 5459119 |
Marssonina leaf spot |
Marssonina betulae |
Conidium |
| 5458843 |
powdery mildew |
Phyllactinia spp. |
Chasmothecium |
| 5458727 |
Septoria leaf spot and cankers |
Septoria spp. |
Leaf with spots |
| 5458725 |
Septoria leaf spot and cankers |
Septoria spp. |
Conidia |
| 5458726 |
Septoria leaf spot and cankers |
Septoria spp. |
|
| 5458724 |
Septoria leaf spot and cankers |
Septoria spp. |
Ruptured pycnidium with conidia |
| 5458723 |
Septoria leaf spot and cankers |
Septoria spp. |
Leaf spot with pycnidia extruding conidia |
| 5458721 |
Septoria leaf spot and cankers |
Septoria spp. |
Leaf spot with pycnidia extruding conidia |
| 5458722 |
Septoria leaf spot and cankers |
Septoria spp. |
Leaf spot with pycnidia extruding conidia |
| 5458720 |
Septoria leaf spot and cankers |
Septoria spp. |
Leaf spot with pycnidia extruding conidia |
| 5459265 |
Ascochyta fungi |
Ascochyta spp. |
Top of infected leaf |
| 5459266 |
Ascochyta fungi |
Ascochyta spp. |
Bottom of infected leaf |
| 5459264 |
Ascochyta fungi |
Ascochyta spp. |
Conidia |
| 5459262 |
Ascochyta fungi |
Ascochyta spp. |
Leaf spot with white masses of extruding spores evident |
| 5459261 |
Ascochyta fungi |
Ascochyta spp. |
Leaf spot with white masses of extruding spores evident |
| 5459260 |
Ascochyta fungi |
Ascochyta spp. |
Conidia |
| 5459258 |
Ascochyta fungi |
Ascochyta spp. |
Conidia |
| 5459259 |
Ascochyta fungi |
Ascochyta spp. |
Conidia |
| 5459257 |
Ascochyta fungi |
Ascochyta spp. |
Top view of pycnidium in leaf tissue showing ostiole |
| 5459255 |
Ascochyta fungi |
Ascochyta spp. |
Pycnidium side view |
| 5459256 |
Ascochyta fungi |
Ascochyta spp. |
Top view of pycnidium in leaf tissue showing ostiole |
| 5459254 |
Ascochyta fungi |
Ascochyta spp. |
Embedded pycnidia extruding spores to leaf surface |
| 5459283 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Top of pycnidium showing ostiole |
| 5459284 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Top of pycnidia showing ostioles |
| 5459285 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Infected leaf |
| 5459281 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Top of pycnidium showing ostiole |
| 5459282 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Top of pycnidium showing ostiole |
| 5459279 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Cross-section of pycnidium |
| 5459280 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Conidia with mucoid appendages |
| 5459277 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Cross-section of pycnidium in leaf tissue |
| 5459278 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Cross-section of pycnidium |
| 5459276 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Leaf spot with pycnidia evident |
| 5459275 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Leaf spot with pycnidia evident |
| 5459274 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Leaf spot with pycnidia evident |
| 5459273 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
Leaf spot with pycnidia evident |
| 5458838 |
powdery mildew |
Phyllactinia spp. |
Chasmothecium |
| 5458839 |
powdery mildew |
Phyllactinia spp. |
Chasmothecium |
| 5458842 |
powdery mildew |
Phyllactinia spp. |
Chasmothecium |
| 5458836 |
powdery mildew |
Phyllactinia spp. |
Chasmothecia |
| 5458837 |
powdery mildew |
Phyllactinia spp. |
Chasmothecia |
| 5458656 |
spruce needle rust |
Chrysomyxa weirii |
Individual Chrysomyxa weirii rust pustule swelling and splitting open on a blue spruce needle. |
| 5458599 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Ploioderma needlecast fruiting structure in mid-June in upstate New York. |
| 5458841 |
powdery mildew |
Phyllactinia spp. |
Chasmothecia |
| 5458840 |
powdery mildew |
Phyllactinia spp. |
Chasmothecia |
| 5458834 |
powdery mildew |
Erysiphe spp. |
Chasmothecium |
| 5458833 |
powdery mildew |
Erysiphe spp. |
Tip of chasmothecial appendages |
| 5458832 |
powdery mildew |
Erysiphe spp. |
Chasmothecial appendages |
| 5458831 |
powdery mildew |
Erysiphe spp. |
Chasmothecium |
| 5458830 |
powdery mildew |
Erysiphe spp. |
Chasmothecium |
| 5458829 |
powdery mildew |
Erysiphe spp. |
Tip of chasmothecial appendages |
| 5458828 |
powdery mildew |
Erysiphe spp. |
Chasmothecia on leaf surface |
| 5458827 |
powdery mildew |
Erysiphe spp. |
Mycelium on leaf surface |
| 5454627 |
downy spot |
Microstroma juglandis |
Hickory downy leaf spot?. |
| 5459121 |
Marssonina leaf spot |
Marssonina betulae |
Acervuli evident in leaf spot |
| 5459122 |
Marssonina leaf spot |
Marssonina betulae |
Leaf spot symptoms |
| 5459120 |
Marssonina leaf spot |
Marssonina betulae |
Conidium |
| 5459118 |
Marssonina leaf spot |
Marssonina betulae |
Acervulus side view |
| 5459117 |
Marssonina leaf spot |
Marssonina betulae |
Acervulus side view |
| 5459133 |
Marssonina leaf spot |
Marssonina betulae |
Leaf spots |
| 5459132 |
Marssonina leaf spot |
Marssonina betulae |
Conidia |
| 5459130 |
Marssonina leaf spot |
Marssonina betulae |
Cross-section of acervulus showing conidia on conidiophores |
| 5459131 |
Marssonina leaf spot |
Marssonina betulae |
Conidia |
| 5459129 |
Marssonina leaf spot |
Marssonina betulae |
Cross-section of acervulus in leaf tissue |
| 5459128 |
Marssonina leaf spot |
Marssonina betulae |
Cross-section of acervulus in leaf tissue |
| 5459127 |
Marssonina leaf spot |
Marssonina betulae |
Cross-section of acervulus in leaf tissue |
| 5459125 |
Marssonina leaf spot |
Marssonina betulae |
Cross-section of acervulus in leaf tissue |
| 5459123 |
Marssonina leaf spot |
Marssonina betulae |
Acervuli evident in leaf spot |
| 5459124 |
Marssonina leaf spot |
Marssonina betulae |
Acervuli evident in leaf spot |
| 5458835 |
powdery mildew |
Phyllactinia spp. |
Chasmothecia on leaf underside |
| 5458655 |
spruce needle rust |
Chrysomyxa weirii |
Chrysomyxa weirii spores |
| 5457969 |
maple cankers |
Stegonsporium spp. |
Dark fruiting bodies emerging from blighted maple twig |
| 5458657 |
spruce needle rust |
Chrysomyxa weirii |
Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles. |
| 5458658 |
spruce needle rust |
Chrysomyxa weirii |
Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles. |
| 5458659 |
spruce needle rust |
Chrysomyxa weirii |
Chrysomyxa weirii rust pustules on blue spruce needles showing the release of masses of infectious spores. |
| 5458665 |
Ploioderma needle cast of pine |
Ploioderma lethale |
Eight mature ascospores |
| 5457972 |
maple cankers |
Stegonsporium spp. |
dark spores |
| 5457973 |
maple cankers |
Stegonsporium spp. |
fruiting body with mature spores |
| 5458688 |
Stigmina leaf spot |
Stigmina lautii |
|
| 5458353 |
downy spot |
Microstroma juglandis |
The fungus sporulates on lower leaf surfaces in a dense white mat of fungal tissue. |
| 5458596 |
juniper-pear rust |
Gymnosporangium sabinae |
Orangish lesion on the upperside of a pear leaf. |
| 5458603 |
Rhabdocline needlecast |
Rhabdocline weirii |
The fruiting bodies rupture the needle epidermis in spring exposing the spore bearing areas. |
| 5458636 |
Rhabdocline needlecast |
Rhabdocline weirii |
Rhabdocline apothecia are released when flaps of leaf epidermis fold back on either side of the midrib. |
| 5458390 |
powdery mildew |
Podosphaera spp. |
Conidia. |
| 5458391 |
powdery mildew |
Podosphaera spp. |
Infected fruit with chasmothecia at calyx end. |
| 5458392 |
powdery mildew |
Podosphaera spp. |
Chasmothecia at fruit calyx. |
| 5458394 |
powdery mildew |
Podosphaera spp. |
Chasmothecium with dichotomously branched appendage evident. |
| 5458395 |
powdery mildew |
Podosphaera spp. |
Chasmothecium. |
| 5458396 |
powdery mildew |
Podosphaera spp. |
Chasmothecium with single ascus. |
| 5458387 |
powdery mildew |
Podosphaera spp. |
Fruit covered by powdery mildew mycelium. |
| 5458388 |
powdery mildew |
Podosphaera spp. |
Mycelium and chasmothecia on fruit. |
| 5458389 |
powdery mildew |
Podosphaera spp. |
Conidia with fibrosin bodies evident |
| 5458337 |
tar spot of maple |
Rhytisma acerinum |
Black tar-like fruiting structures on the upper side of leaves are diagnostic signs of giant tar spot. |
| 1580556 |
Phyllosticta leaf spots |
Phyllosticta spp. |
|
| 1224001 |
powdery mildew |
Microsphaera penicillata |
|
| 1470122 |
Dothistroma needle blight |
Mycosphaerella pini |
|
| 4822063 |
ash rusts |
Puccinia sparganioides |
Leaf distortion, petiole hypertrophy and distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue. |
| 1436059 |
powdery mildew |
Microsphaera penicillata |
|
| 4822070 |
powdery mildew |
Microsphaera penicillata |
cleistothecium with white branched appendages which produce ascospores |
| 4822078 |
Phytophthora basal canker |
Phytophthora palmivora |
Droplets of discolored sap exuding from infected bark tissues. |
| 4822082 |
Phytophthora basal canker |
Phytophthora palmivora |
canker initially 30 inches off ground, 6 months later - 11 feet off ground as infection progresses into tree stem and scaffold branches |
| 4822077 |
Phytophthora basal canker |
Phytophthora palmivora |
Basal canker (6 feet off the ground) with dark staining and discoloration of infected bark. Naples, Florida, USA |
| 1436140 |
oak leaf blister |
Taphrina caerulescens |
|
| 4212098 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
general view showing typical pattern and color |
| 1436058 |
pecan scab |
Cladosporium caryigenum |
and pink mold |
| 2666004 |
pecan scab |
Cladosporium caryigenum |
occurs on leaves, leaf petioles and nut shuck tissue forming small circular olivaceous to black spots pecan scab on nut shucks |
| 5372370 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372382 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5372084 |
green alga |
Cephaleuros virescens |
algal leaf spot |
| 5430471 |
ash anthracnose |
Gnomoniella fraxini |
Close-up of ash foliage showing necrosis due to anthracnose. |
| 5430482 |
powdery mildew |
Erysiphe pulchra |
Powdery mildew fungal growth on the foliage of dogwood leaves and shoot. |
| 5430479 |
dogwood anthracnose |
Discula destructiva |
Foliar symptoms of dogwood anthracnose. |
| 1436152 |
dogwood anthracnose |
Discula destructiva |
|
| 3046080 |
sycamore anthracnose |
Apiognomonia veneta |
premature leaf drop |
| 0590054 |
dogwood anthracnose |
Discula destructiva |
infected branch |
| 3046079 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 0590048 |
dogwood anthracnose |
Discula destructiva |
|
| 0590050 |
dogwood anthracnose |
Discula destructiva |
shoot dieback |
| 4822080 |
Phytophthora basal canker |
Phytophthora palmivora |
Distinctive coffee-brown or dark rusty reddish-brown to black discoloration of bark. |
| 4822079 |
Phytophthora basal canker |
Phytophthora palmivora |
zone line between infected vs. uninfected bark |
| 0590055 |
dogwood anthracnose |
Discula destructiva |
infected shoot |
| 5411355 |
Dothistroma needle blight |
Mycosphaerella pini |
browning on older needles |
| 5411356 |
Dothistroma needle blight |
Mycosphaerella pini |
fruiting bodies erupting through older needles |
| 5411411 |
rust |
Cerotelium fici |
leaf spots on upper leaf surface |
| 5411412 |
rust |
Cerotelium fici |
leaf spots on lower leaf surface |
| 5411413 |
rust |
Cerotelium fici |
|
| 5411414 |
rust |
Cerotelium fici |
|
| 5411415 |
rust |
Cerotelium fici |
rust pustules on underside of leaf |
| 5411383 |
eye spot |
Phyllosticta minima |
symptoms on foliage |
| 5411384 |
eye spot |
Phyllosticta minima |
browning on foliage and black pycnidia in necrotic areas |
| 5411385 |
eye spot |
Phyllosticta minima |
browning on foliage and black pycnidia in necrotic areas |
| 1224007 |
pecan scab |
Cladosporium caryigenum |
|
| 0590056 |
dogwood anthracnose |
Discula destructiva |
leaf spots |
| 0590057 |
dogwood anthracnose |
Discula destructiva |
leaf spots |
| 1223157 |
pecan scab |
Cladosporium caryigenum |
|
| 1436138 |
powdery mildew |
Microsphaera penicillata |
|
| 0590053 |
dogwood anthracnose |
Discula destructiva |
symptoms on flower bracts |
| 0590051 |
dogwood anthracnose |
Discula destructiva |
leaf blotch symptoms |
| 4822064 |
ash rusts |
Puccinia sparganioides |
distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue. |
| 5058047 |
tar spot |
Rhytisma punctatum |
Sporocarps on leaves |
| 5369880 |
brown felt blight of pines |
Neopeckia coulteri |
A snow mold, sometimes known as ‘bear wipe’. Photo taken September 4, 2007. The identification of the fungus is speculated since spores were not recovered. However, affected trees were immediately adjacent to similarly infected lodgepole pine. |
| 5369869 |
brown felt blight of pines |
Neopeckia coulteri |
A snow mold, sometimes known as ‘bear wipe’. Photo taken September 4, 2007. |
| 5411322 |
eye spot |
Phyllosticta minima |
pycnidia of the fungus on leaves |
| 5411323 |
eye spot |
Phyllosticta minima |
pycnidia of the fungus on leaves |
| 5411328 |
Diplodia blight |
Sphaeropsis sapinea |
dark fungal conidia |
| 5411329 |
Diplodia blight |
Sphaeropsis sapinea |
pycnidia on needles |
| 5411337 |
Diplodia blight |
Sphaeropsis sapinea |
tip blight |
| 5411338 |
Diplodia blight |
Sphaeropsis sapinea |
tip blight |
| 5408864 |
Japanese pear rust |
Gymnosporangium asiaticum |
Rust lesion on stem and later cause stem blight |
| 5408860 |
apple scab |
Venturia inaequalis |
|
| 5403523 |
Japanese pear rust |
Gymnosporangium asiaticum |
Rust lesion on pear fruit |
| 5405340 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Several leaves with large, brown blotches with yellow halos on the upper leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405341 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Several leaves with large, brown blotches with yellow halos on the lower leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405342 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
A single leaf with large, brown blotches with yellow halos on the upper leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405343 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
A single leaf with large, brown blotches with yellow halos on the lower leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are white to gray-brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara |
| 5405344 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Close-up of a large, brown blotch on the upper leaf surface caused by the fungus Pseudocercospora vitis. |
| 5405345 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Light shown at a steep angle to the upper leaf surface surface illuminating random tufts which are "synnemata", the spore-producing bodies of the fungus Pseudocercospora vitis. |
| 5405346 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
View across single spot with dark green-black "synnemata" of Pseudocercospora vitis, which are clusters of conidiophores and conidia, coming up from infected tissue. |
| 5405347 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Close-up view across single spot with dark green-black "synnemata" of Pseudocercospora vitis, which are clusters of conidiophores and conidia, coming up from infected tissue. |
| 5405348 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Close-up of single dark green-black "synnema" of Pseudocercospora vitis, which are clusters of conidiophores and conidia, coming up from infected tissue. |
| 5408099 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Magnification of 200X |
| 5408100 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Magnification of 400X |
| 5408095 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5393377 |
Stigmina leaf spot |
Cercospora mangiferae |
|
| 2174023 |
apple scab |
Venturia inaequalis |
conidia on the subcuticular mycelium |
| 2174024 |
apple scab |
Venturia inaequalis |
conidia |
| 2174017 |
apple scab |
Venturia inaequalis |
|
| 2174018 |
apple scab |
Venturia inaequalis |
|
| 2174019 |
apple scab |
Venturia inaequalis |
|
| 2174020 |
apple scab |
Venturia inaequalis |
|
| 2174021 |
apple scab |
Venturia inaequalis |
lesion caused by subcuticular mycelium; conidia released |
| 2174022 |
apple scab |
Venturia inaequalis |
lesion formed by subcuticular mycelium; conidia released |
| 2173043 |
leaf spot |
Sonderhenia eucalypticola |
|
| 2173044 |
leaf spot |
Sonderhenia eucalypticola |
|
| 2173038 |
leaf spot |
Sonderhenia eucalypticola |
|
| 2173039 |
leaf spot |
Sonderhenia eucalypticola |
|
| 2173041 |
leaf spot |
Sonderhenia eucalypticola |
|
| 2173042 |
leaf spot |
Sonderhenia eucalypticola |
|
| 2173037 |
leaf spot |
Sonderhenia eucalypticola |
|
| 2173033 |
anthracnose |
Colletotrichum spp. |
mature acervuli |
| 2173025 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173036 |
Pestalotiopsis leaf spot |
Pestalotiopsis versicolor |
|
| 2173020 |
Pestalotiopsis leaf spot |
Pestalotiopsis versicolor |
|
| 2173024 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173019 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173021 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173022 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173023 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173018 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173015 |
anthracnose |
Colletotrichum spp. |
|
| 2173016 |
anthracnose |
Colletotrichum spp. |
|
| 2173017 |
anthracnose |
Colletotrichum spp. |
|
| 2173012 |
anthracnose |
Colletotrichum spp. |
|
| 2173014 |
anthracnose |
Colletotrichum spp. |
|
| 2173011 |
anthracnose |
Colletotrichum spp. |
|
| 2173009 |
anthracnose |
Colletotrichum spp. |
|
| 2173010 |
anthracnose |
Colletotrichum spp. |
|
| 2173003 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2172100 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173001 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173002 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2172099 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2172098 |
Pestalotiopsis leaf spot |
Pestalotiopsis versicolor |
|
| 2172091 |
anthracnose |
Colletotrichum spp. |
|
| 2172092 |
anthracnose |
Colletotrichum spp. |
|
| 5393181 |
powdery mildew |
Phyllactinia moricola |
Powdery mildew with conidia and cleistothecia (yellow and black dots in the picture) |
| 5364412 |
powdery mildew |
Podosphaera leucotricha |
"Rust spot" symptoms on peach fruits caused by infection with powdery mildew. |
| 5364411 |
powdery mildew |
Podosphaera leucotricha |
"Russeting" of a pear fruit caused by infection with powdery mildew. |
| 5364410 |
powdery mildew |
Podosphaera leucotricha |
Signs of powdery mildew infection on the tip shoot of a pear tree. |
| 5383039 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5389774 |
oak leaf blister |
Taphrina caerulescens |
leaf damage |
| 5334011 |
ash anthracnose |
Gnomoniella fraxini |
|
| 5379699 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5379700 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5379701 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5379740 |
powdery mildew |
Erysiphe flexuosa |
|
| 5379744 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5379810 |
powdery mildew |
Phyllactinia guttata |
|
| 5379811 |
powdery mildew |
Phyllactinia guttata |
|
| 5382965 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382966 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382967 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382968 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382969 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5382972 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5379649 |
powdery mildew |
Sawadaea tulasnei |
|
| 5379647 |
tar spot of maple |
Rhytisma acerinum |
stromata |
| 5379648 |
tar spot of maple |
Rhytisma acerinum |
stromata |
| 5379660 |
Melampsora leaf rust |
Melampsora laricis-populina |
|
| 5379661 |
Melampsora leaf rust |
Melampsora laricis-populina |
|
| 5379680 |
juniper-pear rust |
Gymnosporangium sabinae |
|
| 5379671 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 5379672 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 5385787 |
Marssonina leaf spots |
Marssonina spp. |
Close-up of one spot on lower surface of leaf with a single spore-producing body ("acervulus"). |
| 5385788 |
Marssonina leaf spots |
Marssonina spp. |
Close-up of one spot on lower surface of leaf with a single spore-producing body ("acervulus"). |
| 5385789 |
Marssonina leaf spots |
Marssonina spp. |
Close-up of one spot on lower surface of leaf with a single spore-producing body ("acervulus"). |
| 5385790 |
Marssonina leaf spots |
Marssonina spp. |
Spores of a species of the fungus Marssonina. |
| 5033080 |
Diplodia blight |
Sphaeropsis sapinea |
Diplodia shoot blight on red pine on poor site. |
| 5031068 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
|
| 5334040 |
spot anthracnose |
Elsinoe corni |
|
| 5334041 |
spot anthracnose |
Elsinoe corni |
|
| 5334046 |
dogwood anthracnose |
Discula destructiva |
|
| 5334047 |
dogwood anthracnose |
Discula destructiva |
|
| 5334044 |
powdery mildew |
Oidium spp. |
highly susceptible cultivar 'Cherokee Sunset' |
| 5334048 |
dogwood anthracnose |
Discula destructiva |
|
| 5334050 |
dogwood anthracnose |
Discula destructiva |
|
| 5334051 |
dogwood anthracnose |
Discula destructiva |
|
| 5334049 |
dogwood anthracnose |
Discula destructiva |
|
| 5334058 |
leaf blister of elm |
Taphrina ulmi |
|
| 5334082 |
oak leaf blister |
Taphrina caerulescens |
light green spots = oak leaf blister; brown spots = invasion of oak leaf blister lesions by Monochaetia spp. |
| 5335001 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5335002 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5335003 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5335004 |
Diplodia blight |
Sphaeropsis sapinea |
clubbed shoots showing needle stunting and death |
| 5335005 |
Diplodia blight |
Sphaeropsis sapinea |
clubbed shoots showing needle stunting and death |
| 5337084 |
Diplodia blight |
Sphaeropsis sapinea |
microscopic view of cross-section of needle with fungal pycnidia |
| 5337086 |
Diplodia blight |
Sphaeropsis sapinea |
conidia |
| 5337091 |
powdery mildew |
Phyllactinia guttata |
microscopic view of cleistothecium with appendages with bulbous base |
| 5338008 |
Phytophthora basal canker |
Phytophthora palmivora |
microscopic view of oogonium and antheridium |
| 5338009 |
Phytophthora basal canker |
Phytophthora palmivora |
oospores |
| 5334083 |
oak leaf blister |
Taphrina caerulescens |
|
| 5334084 |
oak leaf blister |
Taphrina caerulescens |
|
| 5335036 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
discoloration of older needles |
| 5337035 |
powdery mildew |
Oidium spp. |
|
| 5337036 |
powdery mildew |
Oidium spp. |
|
| 5383173 |
Mycosphaerella leaf spot |
Mycosphaerella cerasella |
Shothole leaf spots on cherry |
| 5383175 |
Mycosphaerella leaf spot |
Mycosphaerella cerasella |
Shothole leaf spots on cherry |
| 5383176 |
Mycosphaerella leaf spot |
Mycosphaerella cerasella |
Shothole leaf spots on cherry |
| 5334078 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5031055 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
Rhizosphaera needle cast on white spruce. Off color foliage. |
| 5371919 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371917 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371918 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371915 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371916 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5368473 |
anthracnose |
Monostichella spp. |
Leaf section with numerous brown spots with small center portion slightly lighter-colored. |
| 5368474 |
anthracnose |
Monostichella spp. |
Close-up of two leaf spots a ring of darker, slightly raised, spore-producing bodies ("acervuli") |
| 5368475 |
anthracnose |
Monostichella spp. |
Spore-producing bodies ("acervuli") barely discernable under dark-field observation. |
| 5368476 |
anthracnose |
Monostichella spp. |
Spores of a species of the fungus Monostichella. |
| 5368571 |
Phloeospora leaf spot |
Phloeospora spp. |
Leaves with dark brown spots with lighter-colored center tissue and yellow border. |
| 5368572 |
Phloeospora leaf spot |
Phloeospora spp. |
Close-up of a single spot with a ring of raised, spore-producing bodies ("acervuli") in the center. |
| 5368573 |
Phloeospora leaf spot |
Phloeospora spp. |
Portion of a single spot under dark-field observation. |
| 5368574 |
Phloeospora leaf spot |
Phloeospora spp. |
Spores of a species of the fungus Phloeospora. |
| 5368727 |
Phloeospora leaf spot |
Phloeospora spp. |
Another sample of infected leaves with smaller spots. |
| 5368728 |
Phloeospora leaf spot |
Phloeospora spp. |
Close-up of several spots each with raised, spore-producing bodies ("acervuli") oozing spores. |
| 5368729 |
Phloeospora leaf spot |
Phloeospora spp. |
Close-up of two spots, one showing a ring of raised, spore-producing bodies ("acervuli") with a semi-circular ring of spore-producing bodies ("acervuli") in the center. |
| 5368783 |
Marssonina leaf spots |
Marssonina spp. |
Upper surface of leaf with tan spots and thin brown borders. |
| 5368784 |
Marssonina leaf spots |
Marssonina spp. |
Close-up of two spots on the upper surface of leaf that are tan with thin brown borders. |
| 5368785 |
Marssonina leaf spots |
Marssonina spp. |
Close-up of one spot on lower surface of leaf with spore-producing bodies ("acervuli") oozing spores. |
| 5368786 |
Marssonina leaf spots |
Marssonina spp. |
Spores of a species of the fungus Marssonina. |
| 5368791 |
Septoria leaf spot |
Septoria cornicola |
Leaves with random, darkened spots with light brown centers and darker border tissue. |
| 5368775 |
Septoria leaf spot |
Septoria platanifolia |
Dark brown leaf spots with surrounding yellow/brown areas. |
| 5368776 |
Septoria leaf spot |
Septoria platanifolia |
Close-up of brown leaf spots. |
| 5368777 |
Septoria leaf spot |
Septoria platanifolia |
Dark-field observations of spores of Septoria platanifolia. |
| 5368778 |
Septoria leaf spot |
Septoria platanifolia |
Spores of Septoria platanifolia. |
| 5368792 |
Septoria leaf spot |
Septoria cornicola |
Close-up of a spot with brown, spore-producing bodies. |
| 5368793 |
Septoria leaf spot |
Septoria cornicola |
Leaves with random, darkened spots. |
| 5368794 |
Septoria leaf spot |
Septoria cornicola |
Spores of the fungus Septoria cornicola. |
| 5368831 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Numerous brown to gray leaf spots as seen on the upper surface of leaf. |
| 5368832 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Numerous brown leaf spots as seen on the lower surface of leaf. |
| 5368833 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Close-up of a single spot on the upper surface of the leaf, with two spore-producing bodies ("pycnidia") visible. |
| 5368834 |
Phyllosticta leaf spots |
Phyllosticta spp. |
Spores of a species of the fungus Phyllosticta. |
| 5368869 |
Phyllosticta leaf spots |
Phyllosticta spp. |
tan spots with darker brown border on leaves |
| 5368870 |
Phyllosticta leaf spots |
Phyllosticta spp. |
single tan spot with darker brown border on leaves |
| 5368871 |
Phyllosticta leaf spots |
Phyllosticta spp. |
leaf section with several black spore-producing bodies ("pycnidia") |
| 5368872 |
Phyllosticta leaf spots |
Phyllosticta spp. |
spores oozing from one spore-producing body |
| 5368926 |
Septoria leaf spot |
Septoria platanifolia |
Dark brown leaf spots without surrounding yellow/brown areas; 'Bloodgood' cultivar. |
| 5368927 |
Septoria leaf spot |
Septoria platanifolia |
Close-up of infected areas on the lower surface of leaf; 'Bloodgood' cultivar. |
| 5368928 |
Septoria leaf spot |
Septoria platanifolia |
Closer view of infected area on the lower surface of leaf showing spores oozing from a spore-producing body ("pycnidium"); 'Bloodgood' cultivar. |
| 5368937 |
black spot of elm |
Stegophora ulmea |
Leaves with small, raised black spots with a fine area of white tissue surrounding them, found mostly between the major veins. |
| 5368938 |
black spot of elm |
Stegophora ulmea |
Close-up of infected spots with blister-like, brown spore-producing bodies ("acervuli") within the spots. |
| 5368939 |
black spot of elm |
Stegophora ulmea |
Close-up of infected spots with blister-like, brown spore-producing bodies ("acervuli") within the spots. |
| 5368940 |
black spot of elm |
Stegophora ulmea |
Close-up of one infected spot with blister-like, brown spore-producing bodies ("acervuli") seen under dark-field observation. |
| 5368966 |
Pestalotiopsis leaf spot |
Pestalotiopsis spp. |
Freeze-injured, new growth colonized by the fungus. |
| 5368967 |
Pestalotiopsis leaf spot |
Pestalotiopsis spp. |
Needle with many black, spore-producing bodies ("acervuli"). |
| 5368968 |
Pestalotiopsis leaf spot |
Pestalotiopsis spp. |
Spores being released from spore-producing bodies ("acervuli"). |
| 5368969 |
Pestalotiopsis leaf spot |
Pestalotiopsis spp. |
Spores of a species of the fungus Pestalotiopsis. |
| 5369056 |
Septoria leaf spot and cankers |
Septoria spp. |
Dark brown, angular spots with gray flecks. |
| 5369057 |
Septoria leaf spot and cankers |
Septoria spp. |
Close-up of the underside of the leaf showing dark brown, angular spots with gray flecks. |
| 5369058 |
Septoria leaf spot and cankers |
Septoria spp. |
One infected area of leaf where dark brown, spore-producing bodies ("pycnidia") can be seen within the spots. |
| 5369059 |
Septoria leaf spot and cankers |
Septoria spp. |
Close-up of infected area with dark brown, spore-producing bodies ("pycnidia"). |
| 5369060 |
Septoria leaf spot and cankers |
Septoria spp. |
Dark-field observation of long, thin spores of a species of the fungus Septoria. |
| 5369061 |
Septoria leaf spot and cankers |
Septoria spp. |
Long, thin spores of a species of the fungus Septoria. |
| 5369064 |
Septoria leaf spot |
Septoria betulae |
Incubated, infected leaf tissue with spore-producing bodies ("pycnidia") and spore oozing out in a bubble. |
| 5369065 |
Septoria leaf spot |
Septoria betulae |
Close-up of spore-producing bodies ("pycnidia") and spore oozing out in a bubble. |
| 5369066 |
Septoria leaf spot |
Septoria betulae |
Close-up of spore-producing bodies ("pycnidia") under dark-field observation. |
| 5369067 |
Septoria leaf spot |
Septoria betulae |
Spores of the fungus Septoria betulae under dark-field observation. |
| 5369098 |
Stigmina leaf spots |
Stigmina spp. |
Off-colored needles usually older than the current year's needles. |
| 5369099 |
Stigmina leaf spots |
Stigmina spp. |
Off-colored needles usually older than the current year's needles. |
| 5369100 |
Stigmina leaf spots |
Stigmina spp. |
Close-up of several symptomatic needles. Note yellow flecking on needles is due to mite injury. |
| 5369101 |
Stigmina leaf spots |
Stigmina spp. |
Needle showing fuzzy, black tufts rising from stomata which are not as well defined as with the needle cast disease caused by the fungus Rhizosphaera. Note yellow flecking on needles is due to mite injury. |
| 5369102 |
Stigmina leaf spots |
Stigmina spp. |
Closer view of needle showing fuzzy, black tufts rising from stomata which are not as well defined as with the needle cast disease caused by the fungus Rhizosphaera. Note yellow flecking on needles is due to mite injury. |
| 5369103 |
Stigmina leaf spots |
Stigmina spp. |
Closest view of needle showing fuzzy, black tufts rising from stomata which are not as well defined as with the needle cast disease caused by the fungus Rhizosphaera. Note yellow flecking on needles is due to mite injury. |
| 5369104 |
Stigmina leaf spots |
Stigmina spp. |
View of several dark brown, spore-producing bodies ("conidiophores") and brown, multi-celled spores. |
| 5369105 |
Stigmina leaf spots |
Stigmina spp. |
Closer view of several dark brown spore-producing bodies ("conidiophores") and brown, multi-celled spores. |
| 5369106 |
Stigmina leaf spots |
Stigmina spp. |
View of two clumps of conidiophores and many brown, multi-celled spores. |
| 5334019 |
apple scab |
Venturia inaequalis |
Crabapple |
| 5334020 |
apple scab |
Venturia inaequalis |
Crabapple |
| 5334045 |
dogwood anthracnose |
Discula destructiva |
|
| 5334052 |
dogwood anthracnose |
Discula destructiva |
stem canker with cirrhi emerging from fungal fruiting bodies; Symptoms and signs |
| 5334057 |
dogwood anthracnose |
Discula destructiva |
lower branch dieback |
| 5334017 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 2170052 |
Phoma blights |
Phoma spp. |
|
| 2170053 |
Phoma blights |
Phoma spp. |
|
| 2173004 |
anthracnose |
Colletotrichum spp. |
|
| 5263030 |
leaf spot |
Passalora sequoiae |
|
| 5372395 |
green alga |
Cephaleuros virescens |
|
| 5372396 |
green alga |
Cephaleuros virescens |
|
| 5372394 |
green alga |
Cephaleuros virescens |
|
| 5372391 |
green alga |
Cephaleuros virescens |
|
| 5372392 |
green alga |
Cephaleuros virescens |
|
| 5372393 |
green alga |
Cephaleuros virescens |
|
| 5372388 |
green alga |
Cephaleuros virescens |
|
| 5372389 |
green alga |
Cephaleuros virescens |
|
| 5372390 |
green alga |
Cephaleuros virescens |
|
| 5372360 |
green alga |
Cephaleuros virescens |
|
| 5372361 |
green alga |
Cephaleuros virescens |
|
| 5371912 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371913 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5371914 |
leaf shotholes |
Cylindrosporium spp. |
|
| 5373858 |
rust |
Tranzschelia discolor |
|
| 5373859 |
rust |
Tranzschelia discolor |
|
| 5373857 |
rust |
Tranzschelia discolor |
|
| 5373856 |
rust |
Tranzschelia discolor |
|
| 5373855 |
rust |
Tranzschelia discolor |
|
| 5294051 |
oak leaf blister |
Taphrina caerulescens |
|
| 5294050 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5294049 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5373291 |
Phytophthora basal canker |
Phytophthora palmivora |
|
| 5373289 |
Phytophthora basal canker |
Phytophthora palmivora |
|
| 5373290 |
Phytophthora basal canker |
Phytophthora palmivora |
|
| 5373151 |
eye spot |
Phyllosticta minima |
|
| 5373125 |
Phyllosticta leaf spots |
Phyllosticta spp. |
|
| 5373126 |
Phyllosticta leaf spots |
Phyllosticta spp. |
|
| 5373127 |
Phyllosticta leaf spots |
Phyllosticta spp. |
|
| 5373124 |
Phyllosticta leaf spots |
Phyllosticta spp. |
|
| 5372928 |
powdery mildew |
Microsphaera penicillata |
|
| 5372929 |
powdery mildew |
Microsphaera penicillata |
|
| 5372930 |
powdery mildew |
Microsphaera penicillata |
|
| 5371756 |
leaf spot |
Passalora sequoiae |
|
| 5371753 |
leaf spot |
Passalora sequoiae |
|
| 5371754 |
leaf spot |
Passalora sequoiae |
|
| 5371752 |
leaf spot |
Passalora sequoiae |
|
| 5372474 |
spot anthracnose |
Elsinoe corni |
|
| 5371751 |
leaf spot |
Passalora sequoiae |
|
| 5371750 |
leaf spot |
Passalora sequoiae |
|
| 5371740 |
leaf spot |
Passalora sequoiae |
|
| 5371729 |
leaf spot |
Passalora sequoiae |
|
| 5371726 |
leaf spot |
Passalora sequoiae |
|
| 5371725 |
leaf spot |
Passalora sequoiae |
|
| 5371724 |
leaf spot |
Passalora sequoiae |
|
| 5371721 |
leaf spot |
Passalora sequoiae |
|
| 5372085 |
green alga |
Cephaleuros virescens |
|
| 1949036 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Conidia of Mycosphaerella dearnessii. |
| 1949038 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Mycosphaerella dearnessii infection on a Pinus palustris seedling. |
| 1949040 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Close-up of Mycosphaerella dearnessii infection on Pinus sylvestris needles. |
| 1949037 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Mycosphaerella dearnessii infection on a Pinus sylvestris seedling. |
| 1949039 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
Typical lesions caused by Mycosphaerella dearnessii on Pinus sylvestris needles. |
| 5371715 |
leaf spot |
Passalora sequoiae |
|
| 5371698 |
leaf spot |
Passalora sequoiae |
|
| 5371696 |
leaf spot |
Passalora sequoiae |
|
| 5371677 |
needle blight |
Cercospora pini-densiflorae |
|
| 5371675 |
needle blight |
Cercospora pini-densiflorae |
|
| 5371676 |
needle blight |
Cercospora pini-densiflorae |
|
| 5372479 |
spot anthracnose |
Elsinoe corni |
|
| 5372478 |
spot anthracnose |
Elsinoe corni |
|
| 5372477 |
spot anthracnose |
Elsinoe corni |
|
| 5372476 |
spot anthracnose |
Elsinoe corni |
|
| 5372475 |
spot anthracnose |
Elsinoe corni |
|
| 5372473 |
spot anthracnose |
Elsinoe corni |
|
| 5372471 |
spot anthracnose |
Elsinoe corni |
|
| 5372470 |
spot anthracnose |
Elsinoe corni |
|
| 5372468 |
spot anthracnose |
Elsinoe corni |
|
| 5372469 |
spot anthracnose |
Elsinoe corni |
|
| 5372467 |
spot anthracnose |
Elsinoe corni |
|
| 5372466 |
spot anthracnose |
Elsinoe corni |
|
| 5372465 |
spot anthracnose |
Elsinoe corni |
|
| 5372197 |
leaf spot |
Ceratobasidium stevensii |
|
| 5372082 |
green alga |
Cephaleuros virescens |
|
| 5369843 |
brown felt blight of pines |
Neopeckia coulteri |
a snow mold, sometimes known as 'bear wipe'. Photo taken September 4, 2007 at Rabbit Ears' Pass in Routt County, Colorado |
| 5369755 |
poplar rust |
Melampsora medusae |
Yellowish uredia fruiting bodies are on the underside of the leaf. |
| 5369744 |
poplar rust |
Melampsora medusae |
Yellowish uredia on leaf underside produced shortly before leaf drop in early October |
| 5369732 |
brown felt blight of pines |
Neopeckia coulteri |
A snow mold, sometimes known as 'bear wipe'. Photo taken September 4, 2007 at Rabbit Ears' Pass in Routt County, Colorado |
| 5031050 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
Rhizosphaera needle cast associated with a decline of white spruce in Wisconsin |
| 5031053 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
Rhizosphaera needle cast on lower branches of white spruce. |
| 5031054 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
Rhizosphaera needle cast on white spruce windbreaks in a nursery. |
| 5031060 |
Rhizosphaera needle cast |
Rhizosphaera kalkhoffii |
Off color foliage infected with Rhizosphaera kalkhoffii. |
| 5050088 |
Diplodia blight |
Sphaeropsis sapinea |
Main stem Diplodia infection on jack pine. |
| 5366968 |
Melampsora rusts |
Melampsora spp. |
Willow leaves showing signs of the rust, Melampsora epitea. |
| 5366967 |
Melampsora rusts |
Melampsora spp. |
Aspen leaf showing signs of Melampsora sp. rust. |
| 5366447 |
leaf curl |
Taphrina communis |
Fruits on a plum tree infected with plum pocket fungus (Taphrina communis). |
| 5366446 |
leaf curl |
Taphrina communis |
Fruits on a plum tree showing symptoms of infection with plum pocket fungus (Taphrina communis). |
| 5366440 |
powdery mildew |
Sphaerotheca phytoptophila |
Witches' broom in a hackberry tree afflicted with powdery mildew (Sphaerotheca phytotophila). |
| 5366439 |
powdery mildew |
Sphaerotheca phytoptophila |
Witches' brooms in hackberry trees afflicted with powdery mildew (Sphaerotheca phytotophila). |
| 5366438 |
powdery mildew |
Sphaerotheca phytoptophila |
Witches' brooms in hackberry trees afflicted with powdery mildew (Sphaerotheca phytotophila). |
| 5366816 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Young aspen tree showing symptoms of shoot blight (Venturia tremulae). |
| 5366784 |
tar spot |
Rhytisma salicinum |
Willow leaf showing signs of tar spot (Rhytisma salicinum) disease. |
| 5366809 |
anthracnose |
Apiognomonia spp. |
Sycamore tree showing defoliation as a result of anthracnose (Apiognomonia sp.). |
| 5366808 |
anthracnose |
Apiognomonia spp. |
Trunk of sycamore tree showing symptoms of infection with anthracnose (Apiognomonia sp.). |
| 5366807 |
anthracnose |
Apiognomonia spp. |
Sycamore leaf showing signs of infection with anthracnose (Apiognomonia sp.). |
| 5366806 |
anthracnose |
Apiognomonia spp. |
Sycamore tree showing defoliation as a result of anthracnose (Apiognomonia sp.). |
| 5366805 |
anthracnose |
Apiognomonia spp. |
Twig blight symptoms of anthracnose (Apiognomonia sp.) on a sycamore. |
| 5366971 |
Melampsora rusts |
Melampsora spp. |
Rust spores (Melampsora sp.) on a cottonwood leaf. |
| 5366960 |
Gynosporanium rusts |
Gymnosporangium spp. |
Gymnosporangium rust (Gymnosporangium sp.) on a leaf of Toba hawthorn (Crataegus x mordenensis). |
| 5366959 |
Gynosporanium rusts |
Gymnosporangium spp. |
Aecia of Gymnosporangium rust (Gymnosporangium sp.) on leaves of a hawthorn. |
| 5366958 |
Gynosporanium rusts |
Gymnosporangium spp. |
Aecia of Gymnosporangium rust (Gymnosporangium sp.) on leaves of Toba hawthorn (Crataegus x mordenensis). |
| 5366437 |
powdery mildew |
Sphaerotheca phytoptophila |
Witch's broom in a hackberry tree that is afflicted with powdery mildew (Sphaerotheca phytophila). |
| 5366436 |
powdery mildew |
Sphaerotheca phytoptophila |
Witch's broom in a hackberry tree that is afflicted with powdery mildew (Sphaerotheca phytophila). |
| 5366822 |
apple scab |
Venturia inaequalis |
Microscope view of the conidia of apple scab (Venturia inaequalis). |
| 5366821 |
apple scab |
Venturia inaequalis |
Close-up view of apple scab (Venturia inaequalis) on a crabapple leaf. |
| 5366820 |
apple scab |
Venturia inaequalis |
Close-up view of apple scab (Venturia inaequalis) on a crabapple leaf. |
| 5366819 |
apple scab |
Venturia inaequalis |
Apple scab (Venturia inaequalis) on crabapple. |
| 5366813 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Aspen tree severely affected by shepherd's crook leaf and shoot blight (Venturia tremulae). |
| 5366796 |
Marssonina blight of poplar |
Marssonina populi |
Close-up view of Marssonina blight (Marssonina populi) on an aspen leaf. |
| 5366795 |
Marssonina blight of poplar |
Marssonina populi |
Marssonina blight (Marssonina populi) on leaves of an aspen tree. |
| 5366792 |
Marssonina blight of poplar |
Marssonina populi |
Microscopic view of the conidia of Marssonina blight (Marssonina populi). |
| 5366793 |
Marssonina blight of poplar |
Marssonina populi |
Microscopic view of the conidia of Marssonina blight (Marssonina populi). |
| 5366790 |
Marssonina blight of poplar |
Marssonina populi |
Close-up view of Marssonina blight (Marssonina populi) on an aspen leaf. |
| 5366791 |
Marssonina blight of poplar |
Marssonina populi |
Close-up view of Marssonina blight (Marssonina populi) on an aspen leaf. |
| 5366794 |
Marssonina blight of poplar |
Marssonina populi |
Marssonina blight (Marssonina populi) on leaves of an aspen tree. |
| 5366789 |
ink spot leaf blight |
Ciborinia whetzelii |
Signs and symptoms of ink spot leaf blight (Ciborinia whetzelii) on an aspen leaf. |
| 5366788 |
ink spot leaf blight |
Ciborinia whetzelii |
Signs and symptoms of ink spot leaf blight (Ciborinia whetzelii) on an aspen leaf. |
| 5366785 |
ink spot leaf blight |
Ciborinia whetzelii |
Signs and symptoms of ink spot leaf blight (Ciborinia whetzelii) on an aspen leaf. |
| 5366733 |
canker and die back of Siberian Elm |
Tubercularia ulmea |
View through a microscope of the spores of Tubercularia canker (Tubercularia ulmea), a disease of Siberian elm (Ulmus pumila). |
| 5366963 |
Gynosporanium rusts |
Gymnosporangium spp. |
Telia of rust (Gymnosporangium sp.) on a juniper twig. |
| 5366448 |
leaf curl |
Taphrina communis |
Signs and symptoms of plum pocket disease (Taphrina communis) on fruits of a plum tree. |
| 5366444 |
leaf curl |
Taphrina communis |
Signs and symptoms of plum pocket disease (Taphrina communis) on fruits of a plum tree. |
| 5356717 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 5356716 |
sycamore anthracnose |
Apiognomonia veneta |
|
| 5044021 |
Diplodia blight |
Sphaeropsis sapinea |
discoloration |
| 5044022 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5050086 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5051001 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5051002 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5051003 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5051004 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5027019 |
apple scab |
Venturia inaequalis |
asci from squashed pseudothecia |
| 5259073 |
oak leaf blister |
Taphrina caerulescens |
|
| 5222060 |
Graphiola leaf spot |
Graphiola phoenicis |
|
| 5268038 |
powdery mildew |
Erysiphe lagerstroemiae |
|
| 5263036 |
leaf spot |
Passalora sequoiae |
|
| 5262090 |
leaf spot |
Passalora sequoiae |
|
| 5262091 |
leaf spot |
Passalora sequoiae |
|
| 5262092 |
leaf spot |
Passalora sequoiae |
|
| 5262093 |
leaf spot |
Passalora sequoiae |
|
| 5262094 |
leaf spot |
Passalora sequoiae |
|
| 5262095 |
leaf spot |
Passalora sequoiae |
|
| 5262096 |
leaf spot |
Passalora sequoiae |
|
| 5262097 |
leaf spot |
Passalora sequoiae |
|
| 5262098 |
leaf spot |
Passalora sequoiae |
|
| 5262099 |
leaf spot |
Passalora sequoiae |
|
| 5262100 |
leaf spot |
Passalora sequoiae |
|
| 5263001 |
leaf spot |
Passalora sequoiae |
|
| 5263002 |
leaf spot |
Passalora sequoiae |
|
| 5263003 |
leaf spot |
Passalora sequoiae |
|
| 5263004 |
leaf spot |
Passalora sequoiae |
|
| 5263005 |
leaf spot |
Passalora sequoiae |
|
| 5263025 |
leaf spot |
Passalora sequoiae |
|
| 5263026 |
leaf spot |
Passalora sequoiae |
|
| 5263027 |
leaf spot |
Passalora sequoiae |
|
| 5263028 |
leaf spot |
Passalora sequoiae |
|
| 5263029 |
leaf spot |
Passalora sequoiae |
|
| 5263006 |
leaf spot |
Passalora sequoiae |
|
| 5263007 |
leaf spot |
Passalora sequoiae |
|
| 5263008 |
leaf spot |
Passalora sequoiae |
|
| 5263009 |
leaf spot |
Passalora sequoiae |
|
| 5263010 |
leaf spot |
Passalora sequoiae |
|
| 5263011 |
leaf spot |
Passalora sequoiae |
|
| 5263012 |
leaf spot |
Passalora sequoiae |
|
| 5263013 |
leaf spot |
Passalora sequoiae |
|
| 5263014 |
leaf spot |
Passalora sequoiae |
|
| 5263015 |
leaf spot |
Passalora sequoiae |
|
| 5263016 |
leaf spot |
Passalora sequoiae |
|
| 5263017 |
leaf spot |
Passalora sequoiae |
|
| 5263018 |
leaf spot |
Passalora sequoiae |
|
| 5263019 |
leaf spot |
Passalora sequoiae |
|
| 5263020 |
leaf spot |
Passalora sequoiae |
|
| 5263021 |
leaf spot |
Passalora sequoiae |
|
| 5263024 |
leaf spot |
Passalora sequoiae |
|
| 5259045 |
Septoria leaf spot |
Septoria cornicola |
|
| 5258066 |
tar spot of maple |
Rhytisma acerinum |
|
| 5258067 |
tar spot of maple |
Rhytisma acerinum |
|
| 5258068 |
tar spot of maple |
Rhytisma acerinum |
|
| 5259074 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259077 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259060 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259069 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259070 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259071 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259072 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259050 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259051 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259052 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259053 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259054 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259056 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259058 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259055 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259057 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259059 |
Stigmina leaf spot |
Stigmina palmivora |
|
| 5259076 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259078 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259079 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259080 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259081 |
oak leaf blister |
Taphrina caerulescens |
|
| 5259075 |
oak leaf blister |
Taphrina caerulescens |
|
| 5258006 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
|
| 5258007 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
|
| 5257036 |
eye spot |
Phyllosticta minima |
|
| 5257037 |
eye spot |
Phyllosticta minima |
|
| 5220095 |
Dothistroma needle blight |
Mycosphaerella pini |
|
| 5220096 |
Dothistroma needle blight |
Mycosphaerella pini |
|
| 5221002 |
spot anthracnose |
Elsinoe corni |
|
| 5221003 |
spot anthracnose |
Elsinoe corni |
|
| 5220077 |
Cercospora leaf spot |
Cercospora fici |
|
| 5220097 |
Cercospora leaf spot |
Cercospora liquidambaris |
|
| 5265016 |
leaf spot |
Passalora sequoiae |
|
| 5265038 |
oak leaf blister |
Taphrina caerulescens |
|
| 1503024 |
oak leaf blister |
Taphrina caerulescens |
Oak leaf blister; S. red oak |
| 5202068 |
tar spot |
Rhytisma americanum |
Raised spots of leaf; Photo taken in August in Ramsey Co., MN |
| 5202069 |
tar spot |
Rhytisma americanum |
Raised spots on leaf; Photo taken in August in Ramsey Co., MN |
| 5030046 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5030047 |
oak anthracnose |
Apiognomonia errabunda |
|
| 5029017 |
Diplodia blight |
Sphaeropsis sapinea |
pycnidia on a needle |
| 5029014 |
Diplodia blight |
Sphaeropsis sapinea |
Sphaeropsis sapinea and Diplodia scrobiculata can cause shoot blight in jack pine. |
| 5029013 |
Diplodia blight |
Sphaeropsis sapinea |
Main stem infection causing death of top. |
| 5029015 |
Diplodia blight |
Sphaeropsis sapinea |
Heavy infection and shoot mortality in larger trees following a hail storm. |
| 5029016 |
Diplodia blight |
Sphaeropsis sapinea |
Severe shoot blight on a very poor site. |
| 5029018 |
Diplodia blight |
Sphaeropsis sapinea |
Dark discoloration in infected wood of red pine. |
| 1479003 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 1479004 |
Sirococcus blight of conifers |
Sirococcus conigenus |
Needle droop, one of the symptoms that can indicate sirococcus blight on red pine. Photo taken on the Chequamegon National Forest in northern Wisconsin. |
| 3037017 |
oak leaf blister |
Taphrina caerulescens |
Taphrina sp. caused oak leaf blister |
| 3037020 |
oak anthracnose |
Apiognomonia errabunda |
|
| 3036085 |
sycamore anthracnose |
Apiognomonia veneta |
leaf & twig symptoms |
| 3036086 |
sycamore anthracnose |
Apiognomonia veneta |
twig symptoms Asheville, NC |
| 3037005 |
sycamore anthracnose |
Apiognomonia veneta |
American sycamore- |
| 3035061 |
dogwood anthracnose |
Discula destructiva |
symptoms on dogwoog leaves |
| 3035062 |
dogwood anthracnose |
Discula destructiva |
pattern of decline |
| 3035063 |
dogwood anthracnose |
Discula destructiva |
symptoms on leaves |
| 3035064 |
dogwood anthracnose |
Discula destructiva |
symptoms on twig |
| 3035065 |
dogwood anthracnose |
Discula destructiva |
symptoms on leaves in green house |
| 3035070 |
dogwood anthracnose |
Discula destructiva |
old dogwood anthracnose canker on dead stem |
| 3035072 |
dogwood anthracnose |
Discula destructiva |
symptoms on leaves |
| 3035073 |
dogwood anthracnose |
Discula destructiva |
symptoms on flowers |
| 3035074 |
dogwood anthracnose |
Discula destructiva |
flowers |
| 3035066 |
powdery mildews |
|
infected dogwood |
| 1235105 |
powdery mildew of oak |
Microsphaera alphitoides |
|
| 5021076 |
hemlock needle rust |
Pucciniastrum vaccinii |
|
| 5047078 |
apple scab |
Venturia inaequalis |
|
| 5047079 |
apple scab |
Venturia inaequalis |
|
| 5047080 |
apple scab |
Venturia inaequalis |
|
| 5047081 |
apple scab |
Venturia inaequalis |
|
| 5061011 |
apple scab |
Venturia inaequalis |
|
| 5061012 |
apple scab |
Venturia inaequalis |
|
| 5032018 |
oak leaf blister |
Taphrina caerulescens |
|
| 5059041 |
oak leaf blister |
Taphrina caerulescens |
|
| 5059042 |
oak leaf blister |
Taphrina caerulescens |
|
| 5059043 |
oak leaf blister |
Taphrina caerulescens |
|
| 5059044 |
oak leaf blister |
Taphrina caerulescens |
|
| 5041067 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5041068 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5041069 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5041070 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5041071 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5041072 |
Diplodia blight |
Sphaeropsis sapinea |
|
| 5058079 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 5058080 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 5058081 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 5058082 |
Sirococcus blight of conifers |
Sirococcus conigenus |
|
| 5055040 |
needle cast |
Lophodermium seditiosum |
|
| 5055041 |
needle cast |
Lophodermium seditiosum |
|
| 5051050 |
dogwood anthracnose |
Discula destructiva |
|
| 5049040 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
|
| 5049042 |
brown spot needle blight of pine |
Mycosphaerella dearnessii |
|
| 2180029 |
oak leaf blister |
Taphrina caerulescens |
|
| 5026050 |
apple scab |
Venturia inaequalis |
Asci with mature ascospores |
| 5027006 |
Lophodermium needle casts |
Lophodermium spp. |
conidia released from pycnidia |
| 5027007 |
Lophodermium needle casts |
Lophodermium spp. |
conidia |
| 5027002 |
Lophodermium needle casts |
Lophodermium spp. |
pycnidia opened to release conidia |
| 5027004 |
Lophodermium needle casts |
Lophodermium spp. |
|
| 5027005 |
Lophodermium needle casts |
Lophodermium spp. |
|
| 1470125 |
Diplodia blight |
Sphaeropsis sapinea |
pycnidia on needles; December 1970 |
| 1224002 |
powdery mildew |
Microsphaera penicillata |
|
| 2666002 |
zonate leaf spot |
Grovesinia pyramidalis |
early symptoms begins as small gray to light brown spots on the leaflets |
| 4822069 |
powdery mildew |
Microsphaera penicillata |
Initial infection (left) appears as raised circular areas on the leaves covered with powdery white fungus cells which can spread over leaf surface (right). |
| 4822065 |
ash rusts |
Puccinia sparganioides |
Closeup of distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue. |
| 4822062 |
ash rusts |
Puccinia sparganioides |
Leaf distortion, petiole hypertrophy and distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue. |
| 4822081 |
Phytophthora basal canker |
Phytophthora palmivora |
diagnostic culture from infected tree |
| 0590052 |
dogwood anthracnose |
Discula destructiva |
defoliated trees |
| 0590049 |
dogwood anthracnose |
Discula destructiva |
twig dieback |
| 0590046 |
dogwood anthracnose |
Discula destructiva |
leaf diebak |
| 0590047 |
dogwood anthracnose |
Discula destructiva |
|
