Bruce Watt's Images
Title: Plant DiagnosticianOrganization: University of Maine
Unit: Pest Management
Country: United States
| 172 Images of 34 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 5486045 | maple cankers | Stegonsporium spp. | Conidia |
| 5486043 | maple cankers | Stegonsporium spp. | Conidia |
| 5486044 | maple cankers | Stegonsporium spp. | Vertical section of acervulus with conidia |
| 5490505 | downy mildew | Plasmopara halstedii | Sporangia on sporangiophores |
| 5486073 | Entomosporium leaf spot | Diplocarpon mespili | Macroconidium |
| 5490483 | black spot | Diplocarpon rosae | Conidia |
| 5486072 | Entomosporium leaf spot | Diplocarpon mespili | Microconidia and conidiophores |
| 5486071 | Entomosporium leaf spot | Diplocarpon mespili | Macroconidia and microconidia |
| 5490428 | anthracnose | Colletotrichum spp. | Conidia |
| 5490425 | anthracnose | Colletotrichum spp. | Conidia |
| 5490423 | anthracnose | Colletotrichum spp. | Vertical section of acervulus |
| 5490424 | anthracnose | Colletotrichum spp. | Conidia |
| 5488225 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Conidia with appendages obvious |
| 5488224 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Conidia |
| 5488223 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Mass of conidia |
| 5488222 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Mass of conidia |
| 5485257 | downy mildew | Bremia lactucae | Sporangia |
| 5485258 | downy mildew | Bremia lactucae | Sporangia |
| 5485256 | downy mildew | Bremia lactucae | Sporangia surface view |
| 5485255 | downy mildew | Bremia lactucae | Sporangiophores and sporangia |
| 5485254 | downy mildew | Bremia lactucae | Sporangiophore and sporangia |
| 5485253 | downy mildew | Bremia lactucae | Sporangiophores and sporangia |
| 5485252 | downy mildew | Bremia lactucae | Sporangiophores |
| 5490509 | downy mildew | Plasmopara halstedii | Sporangia |
| 5490508 | downy mildew | Plasmopara halstedii | Sporangia |
| 5490507 | downy mildew | Plasmopara halstedii | Sporangiophore tips |
| 5490506 | downy mildew | Plasmopara halstedii | Sporangiophore |
| 5490504 | downy mildew | Plasmopara halstedii | Sporangia |
| 5490503 | downy mildew | Plasmopara halstedii | Sporangia |
| 5490502 | downy mildew | Plasmopara halstedii | Sporangiophores |
| 5490501 | downy mildew | Plasmopara halstedii | Sporangiophores |
| 5490500 | downy mildew | Plasmopara halstedii | Sporangiophores growing from leaf |
| 5490460 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Conidia |
| 5490459 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Conidia |
| 5490492 | orange rust | Arthuriomyces peckianus | Aeciospore, surface view |
| 5490491 | orange rust | Arthuriomyces peckianus | Aeciospores, sectional view |
| 5490490 | orange rust | Arthuriomyces peckianus | Aeciospores, sectional view |
| 5490489 | orange rust | Arthuriomyces peckianus | Aeciospore, sectional view |
| 5490485 | orange rust | Arthuriomyces peckianus | Aecispores in water germinate with a long germ tube. |
| 5490484 | orange rust | Arthuriomyces peckianus | Aecispores in water germinate with a long germ tube. |
| 5490456 | crown rust | Puccinia coronata | Aeciospores amd peridial cells |
| 5490455 | crown rust | Puccinia coronata | Vertical section of aecium |
| 5476487 | hemlock needle rust | Pucciniastrum vaccinii | Urediniospores |
| 5488181 | powdery mildew | Golovinomyces cichoracearum | Conidium |
| 5488182 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 5488183 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 5488184 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 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 |
| 5488192 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 5488193 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 5488194 | powdery mildew | Golovinomyces cichoracearum | Conidia, surface view |
| 5488195 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 5488196 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 5488206 | powdery mildew | Golovinomyces cichoracearum | Conidia in chains (catenate) on leaf surface. |
| 5488207 | powdery mildew | Golovinomyces cichoracearum | Conidia in chains (catenate) on leaf surface. |
| 5488208 | powdery mildew | Golovinomyces cichoracearum | Conidia in chains (catenate) on leaf surface. |
| 5488209 | powdery mildew | Golovinomyces cichoracearum | Conidia |
| 5485022 | Ascochyta fungi | Ascochyta spp. | Conidia |
| 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 |
| 5488332 | Diplodia blight | Sphaeropsis sapinea | Vertical section of pycnidium showing conidial production |
| 5488331 | Diplodia blight | Sphaeropsis sapinea | Vertical section of pycnidium showing conidial production |
| 5488343 | Diplodia blight | Sphaeropsis sapinea | Conidia |
| 5488340 | Diplodia blight | Sphaeropsis sapinea | Immature and mature conidia on conidiophores |
| 5488341 | Diplodia blight | Sphaeropsis sapinea | Vertical section of pycnidium. |
| 5488215 | Septoria leaf spot and cankers | Septoria spp. | Conidia on conidiophores |
| 5488214 | Septoria leaf spot and cankers | Septoria spp. | Conidia |
| 5488176 | downy mildew | Peronospora spp. | Sporangia at sporangiophore tips |
| 5488175 | downy mildew | Peronospora spp. | Sporangiophore tips with sporangia |
| 5488174 | downy mildew | Peronospora spp. | Sporangiophores |
| 5488173 | downy mildew | Peronospora spp. | Sporangiophores |
| 5488218 | powdery mildew | Podosphaera macularis | Conidium with fibrosin bodies evident |
| 5488217 | powdery mildew | Podosphaera macularis | Conidia in chains |
| 5485228 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Conidia |
| 5485227 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Conidia |
| 5485226 | Pestalotiopsis leaf spot | Pestalotiopsis spp. | Mass of conidia |
| 5486128 | crown rust | Puccinia coronata | Urediniospore on stalk |
| 5486127 | crown rust | Puccinia coronata | Urediniospores |
| 5486126 | crown rust | Puccinia coronata | Sectional view of urediniospores |
| 5486125 | crown rust | Puccinia coronata | Surface view of urediniospores |
| 5486124 | crown rust | Puccinia coronata | Sectional view of urediniospores |
| 5486122 | crown rust | Puccinia coronata | Sectional view of urediniospores |
| 5485026 | Ascochyta fungi | Ascochyta spp. | Conidia |
| 5485025 | Ascochyta fungi | Ascochyta spp. | Vertical section of pycnidium. Pycnidial wall and conidia. |
| 5487426 | Ascochyta fungi | Ascochyta spp. | Vertical section at top of pycnidium full of conidia |
| 5484701 | anthracnose | Colletotrichum orbiculare | Conidia |
| 5484700 | anthracnose | Colletotrichum orbiculare | Vertical section of acervulus (partial view). |
| 5484652 | Alternaria black molds / stem cankers | Alternaria spp. | Conidia. |
| 5484651 | Alternaria black molds / stem cankers | Alternaria spp. | Conidia. |
| 5484650 | Alternaria black molds / stem cankers | Alternaria spp. | Conidia. |
| 5485624 | Ascochyta fungi | Ascochyta spp. | Conidia. |
| 5485636 | anthracnose | Colletotrichum spp. | Vertical section of acervulus showing conidia and conidiophores. |
| 5484507 | Blumeriella leaf spot of cherry and plum | Blumeriella jaapii | Conidia |
| 5485247 | Alternaria black molds / stem cankers | Alternaria spp. | Conidia. |
| 5485246 | Alternaria black molds / stem cankers | Alternaria spp. | Conidium. |
| 5485245 | Alternaria black molds / stem cankers | Alternaria spp. | Conidium. |
| 5485020 | anthracnose | Colletotrichum spp. | Conidiophores producing conidia. |
| 5485016 | anthracnose | Colletotrichum spp. | Conidia. |
| 5485032 | downy mildew | Plasmopara viticola | Sporangium |
| 5485033 | downy mildew | Plasmopara viticola | Sporangium |
| 5485031 | downy mildew | Plasmopara viticola | Sporangiophores |
| 5485030 | downy mildew | Plasmopara viticola | Sporangiophores |
| 5484508 | Blumeriella leaf spot of cherry and plum | Blumeriella jaapii | Conidium on conidiophore. |
| 5484242 | Kabatina blight | Kabatina juniperi | Conidia lightly stained with cotton blue. |
| 5484246 | Kabatina blight | Kabatina juniperi | Vertical section of acervulus with conidia emerging from conidiophores |
| 5484241 | Kabatina blight | Kabatina juniperi | Vertical section of acervulus with conidia emerging from conidiophores. Lightly stained with cotton blue. |
| 5476480 | Septoria leaf spot | Septoria betulae | Conidia evident. Crushed leaf tissue. |
| 5476434 | Ascochyta fungi | Ascochyta spp. | Conidia- |
| 5476422 | Rhizosphaera needle cast | Rhizosphaera pini | Conidiophores and conidia |
| 5476423 | Rhizosphaera needle cast | Rhizosphaera pini | Conidia |
| 5476429 | Rhizosphaera needle cast | Rhizosphaera pini | Conidia and conidiophore |
| 5476430 | Rhizosphaera needle cast | Rhizosphaera pini | Conidia and conidiophores |
| 5476427 | Rhizosphaera needle cast | Rhizosphaera pini | Conidium |
| 5476428 | Rhizosphaera needle cast | Rhizosphaera pini | Conidia |
| 5476496 | Alternaria leaf spot | Alternaria padwickii | Conidia on tape mount |
| 5476494 | Alternaria leaf spot | Alternaria padwickii | Conidiophores |
| 5476495 | Alternaria leaf spot | Alternaria padwickii | Conidiophores on tape mount |
| 5476493 | Alternaria leaf spot | Alternaria padwickii | Conidiophores |
| 5476492 | Alternaria leaf spot | Alternaria padwickii | Conidia on leaf spot viewed with dissecting scope |
| 5476483 | Septoria leaf spot | Septoria betulae | Conidium |
| 5476482 | Septoria leaf spot | Septoria betulae | Conidia |
| 5476481 | Septoria leaf spot | Septoria betulae | Conidia from crushed leaf tissue |
| 5476418 | Phyllosticta leaf spots | Phyllosticta spp. | Conidia |
| 5476417 | Phyllosticta leaf spots | Phyllosticta spp. | Conidiophores showing conidiogenesis |
| 5461164 | rust | Uromyces ari-triphylli | Aeciospores |
| 5461147 | iris leaf spot | Davidiella macrospora | Conidial surfaces and conidiophores |
| 5461148 | iris leaf spot | Davidiella macrospora | Sectional view of conidium and conidiophores |
| 5461149 | iris leaf spot | Davidiella macrospora | Surface view of conidium and conidiophores |
| 5461150 | iris leaf spot | Davidiella macrospora | Surface view of conidium |
| 5461151 | iris leaf spot | Davidiella macrospora | Sectional view of conidium |
| 5461152 | iris leaf spot | Davidiella macrospora | Sectional view of conidium |
| 5461153 | iris leaf spot | Davidiella macrospora | Surface view of conidium |
| 5461154 | iris leaf spot | Davidiella macrospora | Conidium forming on conidiophore |
| 5461155 | iris leaf spot | Davidiella macrospora | Conidium forming from conidiophore |
| 5461156 | iris leaf spot | Davidiella macrospora | Conidiophores |
| 5461157 | iris leaf spot | Davidiella macrospora | Conidiogenesis |
| 5461158 | iris leaf spot | Davidiella macrospora | Conidium and conidiophores |
| 5459119 | Marssonina leaf spot | Marssonina betulae | Conidium |
| 5461116 | Ascochyta fungi | Ascochyta spp. | Conidia |
| 5458738 | Volutella blight | Volutella buxi | Conidia |
| 5458725 | Septoria leaf spot and cankers | Septoria spp. | Conidia |
| 5458726 | Septoria leaf spot and cankers | Septoria spp. | |
| 5459264 | Ascochyta fungi | Ascochyta spp. | Conidia |
| 5459263 | Ascochyta fungi | Ascochyta spp. | Conidia extruding from pycnidium |
| 5459260 | Ascochyta fungi | Ascochyta spp. | Conidia |
| 5459258 | Ascochyta fungi | Ascochyta spp. | Conidia |
| 5459259 | Ascochyta fungi | Ascochyta spp. | Conidia |
| 5459280 | Guignardia blotch of buckeyes and horsechestnuts | Guignardia aesculi | Conidia with mucoid appendages |
| 5459120 | Marssonina leaf spot | Marssonina betulae | Conidium |
| 5458773 | Phoma blight | Phoma clematidina | Conidia |
| 5458772 | Phoma blight | Phoma clematidina | Conidia |
| 5458771 | Phoma blight | Phoma clematidina | Conidia |
| 5461144 | iris leaf spot | Davidiella macrospora | Conidium |
| 5458787 | downy mildew | Peronospora spp. | Sporangia |
| 5458786 | downy mildew | Peronospora spp. | Sporangia |
| 5458784 | downy mildew | Peronospora spp. | Sporangia on sporangiophore |
| 5458783 | downy mildew | Peronospora spp. | Sporangia |
| 5459189 | onion rust | Puccinia allii | Urediniospores |
| 5459188 | onion rust | Puccinia allii | Urediniospores, surface view |
| 5459178 | onion rust | Puccinia allii | Urediniospores |
| 5459176 | onion rust | Puccinia allii | Urediniospores |
| 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 |
| 5428816 | Embellisia skin blotch and bulb canker of garlic | Embellisia allii | Conidia on conidiophores. |
| 5428817 | Embellisia skin blotch and bulb canker of garlic | Embellisia allii | Conidia |
| 5428821 | Embellisia skin blotch and bulb canker of garlic | Embellisia allii | Conidia on conidiophores. |
