| 1593002 |
rodents |
|
Winter rodent feeding at the base of young sugar Maple trees |
| 5462131 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 5462878 |
canker |
|
|
| 5454771 |
|
|
|
| 5454633 |
Hypoxylon cankers |
Hypoxylon spp. |
|
| 5454634 |
Hypoxylon canker |
Annulohypoxylon stygium var. stygium |
|
| 5454632 |
Hypoxylon canker |
Annulohypoxylon thouarsianum var. thouarsianum |
|
| 5454770 |
decay |
|
|
| 5454769 |
decay |
|
|
| 5454601 |
basal wound |
|
Basal decay with girdling roots. |
| 5454615 |
weak branch union |
|
Codominant stems with bleeding canker and stem girdling roots. |
| 1238203 |
imbedded objects |
|
Tree damages by dog running cable. |
| 5394756 |
decay |
|
Physical damage to the base of the tree probably caused by lawnmowers/trimmers. |
| 5366732 |
Tubercularia cankers |
Tubercularia spp. |
Honeylocust tree exhibiting symptoms of Tubercularia canker (Tubercularia sp.). |
| 5254093 |
canker |
|
Bleeding canker on landscape oak. Cause unknown. |
| 5061023 |
canker |
|
Unidentified canker on young walnut |
| 5421873 |
basal cankers |
|
|
| 5051090 |
Eutypella canker |
Eutypella parasitica |
|
| 5051084 |
Eutypella canker |
Eutypella parasitica |
"Cobar-head" canker on sugar maple. |
| 5051085 |
Eutypella canker |
Eutypella parasitica |
|
| 5051086 |
Eutypella canker |
Eutypella parasitica |
Black sporocarps of Eutypella parasitica on the surface of a canker on sugar maple. |
| 5051087 |
Eutypella canker |
Eutypella parasitica |
|
| 5051088 |
Eutypella canker |
Eutypella parasitica |
|
| 5051091 |
Eutypella canker |
Eutypella parasitica |
|
| 5038070 |
mossy maple polypore |
Oxyporus populinus |
Sporocarps of Oxyporus populinus fruiting on the surface of a Eutypella canker. Oxyporus is commonly associated with Eutypella cankers. |
| 5034063 |
Eutypella canker |
Eutypella parasitica |
A large Eutypella canker on Norway maple. |
| 5037090 |
Eutypella canker |
Eutypella parasitica |
|
| 5044033 |
Eutypella canker |
Eutypella parasitica |
|
| 5038009 |
Eutypella canker |
Eutypella parasitica |
|
| 1409078 |
clinker polypore |
Inonotus obliquus |
Many fungi produce wedges in bark. Trees usually respond by producing a blocking tissue in the bark. A wedge, like this formed by Poria obliquua in paper birch, allows the fungus to spread to the outer side of wall 4, thus enlarging the wound and starting seesaw action between tree and fungus. The result is a perennial canker. |
| 5038034 |
Leucostoma canker of spruce |
Leucostoma kunzei |
Resin flow over branch canker. |
| 5252007 |
Eutypella canker |
Eutypella parasitica |
Large Eutypella canker causing structural defect |
| 5297082 |
canker |
|
Bleeding on surface of bark; cause unknown. |
| 5297083 |
canker |
|
Bleeding on bark surface; cause unknown. |
| 5251062 |
canker |
|
Bleeding on oak, unknown cause. |
| 5251099 |
canker |
|
Canker under tarry spot on oak. Cause unknown. |
| 5364404 |
Cytospora cankers |
Cytospora spp. |
Cytospora canker on an apple tree. |
| 5364403 |
Cytospora cankers |
Cytospora spp. |
Progression of cytospora infection on the trunk of a sweet cherry tree. |
| 5364402 |
Cytospora cankers |
Cytospora spp. |
Cytospora fruiting bodies under the bark epidermis of sweet cherry. |
| 5034064 |
Eutypella canker |
Eutypella parasitica |
A large canker caused by Eutypella parasitica on a Norway maple in the urban landscape. Sporocarps of Oxyporus populinus, commonly associated with Eutypella cankers, can be seen on the canker face. |
| 5034002 |
Eutypella canker |
Eutypella parasitica |
A large Eutypella canker at the base of a sugar maple. |
| 5033098 |
Eutypella canker |
Eutypella parasitica |
A Eutypella canker at the base of a sugar maple. |
| 5033099 |
Eutypella canker |
Eutypella parasitica |
A Eutypella canker ("cobra-head" canker) on sugar |
| 5033100 |
Eutypella canker |
Eutypella parasitica |
A large Eutypella canker on sugar maple. |
| 5334022 |
twig canker |
Lepteutypa cupressi |
|
| 1473076 |
canker |
|
|
| 5366716 |
Thyronectria canker |
Thyronectria austroamericana |
Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366965 |
western gall rust |
Endocronartium harknessii |
Hip canker of western gall rust (Endocronartium harknessii) on a lodgepole pine. |
| 5366737 |
Dothiora fungus |
Dothiora polyspora |
Aspen branch showing symptoms of both Dothiora canker (Dothiora polyspora, on the right) and Cytospora canker (Cytospora sp.). |
| 5366736 |
Dothiora fungus |
Dothiora polyspora |
Twigs of an aspen tree showing symptoms of infection with Dothiora canker (Dothiora polyspora). |
| 5366735 |
Dothiora fungus |
Dothiora polyspora |
Damaged aspen tree showing symptoms of infection with Dothiora canker (Dothiora polyspora). |
| 5366734 |
Dothiora fungus |
Dothiora polyspora |
Twigs of an aspen tree showing symptoms of infection with Dothiora canker (Dothiora polyspora). |
| 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). |
| 5366729 |
Cytospora cankers |
Cytospora spp. |
Symptoms of Cytospora canker (Cytospora sp.) on the limbs of a cottonwood tree (Populus sp.). |
| 5366728 |
Cytospora cankers |
Cytospora spp. |
View through a microscope of Cytophora sp. spores, the causative agent of Cytospora canker. |
| 5366726 |
Cytospora cankers |
Cytospora spp. |
Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree. |
| 5366725 |
Cytospora cankers |
Cytospora spp. |
Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree. |
| 5366724 |
Cytospora cankers |
Cytospora spp. |
Colorful symptoms of Cytospora canker (Cytospora sp.) on the trunk of an aspen tree (Populus tremuloides). |
| 5366723 |
Cytospora cankers |
Cytospora spp. |
Symptoms of Cytospora canker (Cytospora sp.) on the trunk of an alder. |
| 5366718 |
Cytospora cankers |
Cytospora spp. |
Symptoms of Cytospora canker (Cytospora sp.) on the branches of an apple tree. |
| 5366722 |
Cytospora cankers |
Cytospora spp. |
Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree. |
| 5366721 |
Cytospora cankers |
Cytospora spp. |
Symptoms of Cytospora canker (Cytospora sp.) on the branches of three trees.
|
| 5366720 |
Cytospora cankers |
Cytospora spp. |
Symptoms of Cytospora canker (Cytospora sp.) on the branch of a spruce. |
| 5366719 |
Cytospora cankers |
Cytospora spp. |
Symptoms of Cytospora canker (Cytospora sp.) on the branch of a willow. |
| 5366717 |
Cytospora cankers |
Cytospora spp. |
Symptoms of Cytospora canker (Cytospora sp.) on the trunk of an aspen tree (Populus tremuloides). |
| 5366715 |
Thyronectria canker |
Thyronectria austroamericana |
Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366714 |
Thyronectria canker |
Thyronectria austroamericana |
Close-up view of the signs and symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366713 |
Thyronectria canker |
Thyronectria austroamericana |
Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366712 |
Thyronectria canker |
Thyronectria austroamericana |
Close-up view of symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366710 |
Thyronectria canker |
Thyronectria austroamericana |
Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366709 |
Thyronectria canker |
Thyronectria austroamericana |
Cross-section of a honeylocust trunk showing signs of infection with both Thyronectria canker (Thyronectria austro-americana, yellow coloration) and Nectria canker (Nectria cinnabarina, dark coloration). |
| 5366706 |
Thyronectria canker |
Thyronectria austroamericana |
Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366707 |
Thyronectria canker |
Thyronectria austroamericana |
Imperfect fruiting bodies of Thyronectria canker (Thyronectria austro-americana) on honeylocust (Gleditsia triacanthos). |
| 5366695 |
black knot |
Apiosporina morbosa |
Branches of a chokecherry (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366694 |
black knot |
Apiosporina morbosa |
Cross-section of the trunk of a chokecherry (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366692 |
black knot |
Apiosporina morbosa |
Section of a chokecherry branch (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366690 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366691 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366689 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366687 |
Cryptosphaeria canker |
Cryptosphaeria ligniota |
Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366686 |
sooty-bark canker |
Encoelia pruinosa |
Apothecia of sooty-bark canker (Encoelia pruinosa) on the trunks of aspen trees (Populus tremuloides). |
| 5366685 |
sooty-bark canker |
Encoelia pruinosa |
Signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides). |
| 5366684 |
sooty-bark canker |
Encoelia pruinosa |
Apothecia of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides).
|
| 5366683 |
sooty-bark canker |
Encoelia pruinosa |
Close-up view of signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunks of aspen trees (Populus tremuloides). |
| 5366682 |
sooty-bark canker |
Encoelia pruinosa |
Signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides). |
| 5366681 |
sooty-bark canker |
Encoelia pruinosa |
Close-up view of signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides). |
| 5366680 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Symptoms of hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366679 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Close-up view of hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366678 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366677 |
Hypoxylon canker of aspen |
Entoleuca mammata |
Hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366672 |
black rot |
Ceratocystis fimbriata |
Black canker (Ceratocystis fimbriata) on an aspen tree. |
| 5366671 |
black rot |
Ceratocystis fimbriata |
Black canker (Ceratocystis fimbriata) on an aspen tree. |
| 5366667 |
Siberian elm canker |
Botryodiplodia hypodermia |
Signs and symptoms of Botryodiplodia canker (Botryodiplodia hypodermia) on an elm trunk. |
| 5366665 |
Endothia fungus |
Endothia singularis |
Signs and symptoms of Endothia canker (Endothia singularis) on a branch of Gambel oak (Quercus gambelii). |
| 5366664 |
Endothia fungus |
Endothia singularis |
Signs and symptoms of Endothia canker (Endothia singularis) on the branch of a Gambel oak (Quercus gambelii). |
| 5366663 |
Endothia fungus |
Endothia singularis |
Signs and symptoms of Endothia canker (Endothia singularis) on branches of Gambel oak (Quercus gambelii). |
| 5365433 |
Botryosphaeria canker |
Botryosphaeria dothidea |
Severe gumming on the trunk of a peach tree, caused by Botryosphaeria canker (Botryosphaeria dothidea). |
| 5356879 |
aphids |
|
Bleeding canker on an aspen tree (Populus tremuloides) caused by woolly aphids (species unknown). |
| 5356876 |
Cytospora cankers |
Cytospora spp. |
Section of cottonwood trunk showing symptoms of Cytospora Canker (Cytospora sp.). |
| 5048058 |
canker |
|
|
| 5049057 |
canker |
|
|
| 5291044 |
inrolled crack |
|
|
| 5191061 |
canker |
|
|
| 5191068 |
canker |
|
|
| 5291036 |
canker |
|
|
| 5291031 |
canker |
|
|
| 5291033 |
canker |
|
|
| 5291035 |
canker |
|
|
| 5291032 |
basal cankers |
|
|
| 5291034 |
basal cankers |
|
|
| 5191065 |
basal cankers |
|
|
| 1408052 |
Compartmentalization Of Decay In Trees (CODIT) |
|
On these red maple samples, cambial dieback is consistent on all wounds, whether treated or control. |
| 5224013 |
crown gall |
Rhizobium radiobacter |
|
| 1503071 |
canker |
|
Heart rot; hardwoods; cankering at base |
| 1506072 |
chestnut blight or canker |
Cryphonectria parasitica |
Chestnut blight - stem canker |
| 1502078 |
orange hobnail canker |
Cryphonectria gyrosa |
Endothia gyrosa canker; spanish oak |
| 1502079 |
hispidus canker |
Inonotus hispidus |
Hispidus canker |
| 1502081 |
Gibberella canker |
Gibberella baccata |
Fusarium lateritium canker; mulberry |
| 1502082 |
Gibberella canker |
Gibberella baccata |
Fusarium lateritium canker; mulberry |
| 1468008 |
canker |
|
|
| 1502072 |
hispidus canker |
Inonotus hispidus |
Polyporus hispidus; nutall oak |
| 1502073 |
hispidus canker |
Inonotus hispidus |
Polyporus hispidus canker |
| 1502071 |
Strumella canker |
Urnula craterium |
Strumella canker; oak |
| 5029041 |
Eutypella canker |
Eutypella parasitica |
"Cobra-head" canker. |
| 5029042 |
Eutypella canker |
Eutypella parasitica |
A large canker on the main stem of a sugar maple |
| 5029045 |
Eutypella canker |
Eutypella parasitica |
Swollen, deformed stem at site of canker. |
| 5029043 |
Eutypella canker |
Eutypella parasitica |
A main stem canker |
| 5029044 |
Eutypella canker |
Eutypella parasitica |
Severe deformation of a tree caused by Eutypella parasitica. |
| 5028048 |
butternut canker |
Sirococcus clavigignenti-juglandacearum |
Cankers often ooze sap from beneath the bark. |
| 5028057 |
human caused injury |
|
Canker caused by lantern in campground; Note the nail just above the sloughing bark that shows where the lantern was hung. The heat from the lantern killed the bark of this tree. |
| 1247269 |
imbedded objects |
|
|
| 1408079 |
canker |
|
Many tree problems are still poorly understood. But on the positive side, we've learned a great deal about keeping trees healthy, safe, and beautiful. |
| 1408066 |
tree implants |
|
large holes created in injections or implants may create cankered areas and may keep the wounds from closing. |
| 1408053 |
Compartmentalization Of Decay In Trees (CODIT) |
|
We found many decay-causing fungi in tissue taken from treated and control wounds. If a client insists on using wound dressing, apply a very thin coat but only after you've compelted all the other procedures for maintaining a healthy tree. |
| 1408041 |
Compartmentalization Of Decay In Trees (CODIT) |
|
These sections came from a maple tree that was wounded experimentally. A wide variety of decay resulted, but all wounds showed the same type of thick callus ring. Again, callus is associated with the growth rate of the tree, not with the decay process. |
| 1408051 |
Compartmentalization Of Decay In Trees (CODIT) |
|
We conducted research on wound dressings on hundreds of trees. After dissecting them, we found no difference between treated and control trees. These samples from the same white oak show no difference in callus formation. |
| 1407039 |
Compartmentalization Of Decay In Trees (CODIT) |
|
Most people think that dressings will help heal a wound, but research shows that wound dressings do not stop decay. |
| 1397029 |
imbedded objects |
|
embedded object |
| 1397031 |
imbedded objects |
|
|
| 1397075 |
imbedded objects |
|
yard swing mount has girdled the tree |
| 1408046 |
canker |
|
Pruning can also help to prevent other tree problems, such as cankers, that start on dying branches. |
| 1238204 |
imbedded objects |
|
Tree girdling by ropes for hammock. Greer, SC. |
| 1238207 |
imbedded objects |
|
Tree growing around an old sign. Greenville, Sc. |
| 1397027 |
human caused injury |
|
"lantern canker" |
| 1397076 |
imbedded objects |
|
Swing mounted on tree |
| 1238206 |
imbedded objects |
|
Metal and concrete girdle. |
| 3046065 |
human caused injury |
|
weed wacker damage to base of small tree |
| 2651020 |
human caused injury |
|
basal damage in parking lot |
| 1397086 |
imbedded objects |
|
fence embedded in tree |
| 3036056 |
imbedded objects |
|
barbed wire canker |
| 3036060 |
imbedded objects |
|
barbed wire canker |
| 1407030 |
Compartmentalization Of Decay In Trees (CODIT) |
|
New wood that forms around the wound is usually not infected. A callus covers the injured surface. |
| 1397074 |
Eutypella canker |
Eutypella parasitica |
Eutypella canker creating a hazard in a campground |
| 1397127 |
imbedded objects |
|
mitigation of split crotch attempted with band; resulted in a girdled trunk |
| 1408008 |
Compartmentalization Of Decay In Trees (CODIT) |
|
Cavities in trees start with wounds and dead branches or leaders. A cavity's diameter will be the same as that of the tree when it was wounded or when the branch or leader died. The leader on this birch tree died when the tree was the diameter of the cavity. |
| 5170091 |
imbedded objects |
|
Acer pseudoplatanus being throttled by wire hawser. |
| 5062039 |
imbedded objects |
|
wire fence damage |
| 5059028 |
imbedded objects |
|
swing mounted to trees |
| 5059030 |
imbedded objects |
|
yard swing mounting has girdled the tree |
| 5043002 |
imbedded objects |
|
tree bound with rope at crotch |
| 5043050 |
imbedded objects |
|
cable around tree |
