Cytospora cankers
Cytospora spp. Ehrenb.

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    Symptoms (42)
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Image Descriptor Description
5492314 Fruiting Bodies Cytospora/spruce canker: cross section of Cytospora pycnidial stroma
5492315 Fruiting Bodies The tip of a pycnidial stroma just visible breaking through the bark on a spruce branch with Cytospora canker
5492317 Asexual Spore yellow tendrils of conidia oozing from pycnidial stromata of a Cytospora sp. developing in an infected spruce branch
5492312 Fruiting Bodies Pycnidial stromata of Cytospora sp. showing yellowish spores oozing from fruiting bodies after bark cut away and tissue moistened.
5492309 Fruiting Bodies Tendril of spores (conidia) oozing from pycnidial stroma of a Cytospora sp.
5492307 Fruiting Bodies Pycnidial stromata of Cytospora exposed in bark of a spruce branch
5492308 Fruiting Bodies Cross section through a pycnidial stroma in bark of a blue spruce branch
5492311 Fruiting Bodies Pycnidial stromata of Cytospora sp. showing yellowish spores oozing from fruiting bodies after bark was cut away and tissue moistened.
5492316 Fruiting Bodies Close up of a pycnidial stroma of Cytospora in cross section
5492310 Fruiting Bodies Pycnidial stromata exposed when bark cut away from spruce canker
2251022 Symptoms infected shoot
2251020 Symptoms sunken necrotic area
2251021 Symptoms canker injury
2251023 Symptoms
2251024 Symptoms
5411433 Sign orange cirrhi (ribbon-like mass of spores) exuded from pycnidia
5411434 Asexual Spore Fungal condia
5411399 Symptoms cankered branch
5411400 Symptoms cankered branch
4213056 Symptoms
1361160 Symptoms Sunken lesions
4213057 Symptoms branch flagging
5364404 Sign Cytospora canker on an apple tree.
5364403 Fruiting Bodies Progression of cytospora infection on the trunk of a sweet cherry tree.
5364402 Fruiting Bodies Cytospora  fruiting bodies under the bark epidermis of sweet cherry.
5365422 Symptoms An apple trunk with a Cytospora canker infection.
5371929 Symptoms
5371930 Sign
5371927 Symptoms
5371928 Symptoms
5371925 Symptoms
5371926 Symptoms
5371923 Symptoms
5371924 Symptoms
5371922 Symptoms
1473155 Fruiting Bodies Valsa (perfect stage) of Cytospora (imperfect)
5356714 Sign Portions of peach stems displaying signs of Cytospora canker.
5365421 Symptoms Apple with bark removed to show symptoms of infection with both Cytospora canker (Cytospora sp.) and Valsa canker (Valsa ceratosperma).
5366727 Damage Tip dieback in an ash tree (Fraxinus sp.), caused by infection with Cytospora canker (Cytospora sp.).
5366729 Symptoms Symptoms of Cytospora canker (Cytospora sp.) on the limbs of a cottonwood tree (Populus sp.).
5366728 Life Cycle View through a microscope of Cytophora sp. spores, the causative agent of Cytospora canker.
5366726 Fruiting Bodies Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree.
5366725 Fruiting Bodies Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree.
5366724 Symptoms Colorful symptoms of Cytospora canker (Cytospora sp.) on the trunk of an aspen tree (Populus tremuloides).
5366723 Symptoms Symptoms of Cytospora canker (Cytospora sp.) on the trunk of an alder.
5366718 Symptoms Symptoms of Cytospora canker (Cytospora sp.) on the branches of an apple tree.
5366722 Fruiting Bodies Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree.
5366721 Symptoms Symptoms of Cytospora canker (Cytospora sp.) on the branches of three trees.  
5366720 Sign Symptoms of Cytospora canker (Cytospora sp.) on the branch of a spruce.
5366719 Symptoms Symptoms of Cytospora canker (Cytospora sp.) on the branch of a willow.
5366717 Symptoms Symptoms of Cytospora canker (Cytospora sp.) on the trunk of an aspen tree (Populus tremuloides).
5356876 Symptoms Section of cottonwood trunk showing symptoms of Cytospora Canker (Cytospora sp.).
5356715 Sign Cytosporaspore tendrils on Sycamore
1473281 Symptoms close-up of canker in image 1473280
1473280 Symptoms 1941; perennial type Valsa canker on 6.2" dbh aspen marked for cutting on sanitation plot. Upper portion of canker recent and active.
1492148 Sign Cytospora Canker Peach
5038032 Infestation
5038033 Infestation
5050054 Symptoms
5050055 Symptoms
5050056 Symptoms
5050057 Symptoms
5050058 Symptoms
5050059 Symptoms
5050060 Symptoms
5050061 Symptoms
5050062 Symptoms
5050064 Symptoms
5037098 Symptoms dead branches from cytospora canker
1415123 Fruiting Bodies Spore mass on dead beech bark. July 30, 2002
1415124 Fruiting Bodies Spore mass on dead beech bark. July 30, 2002
2250024 Symptoms canker on white poplar

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