Alternaria black molds / stem cankers
Alternaria spp. Nees

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    Symptoms (65)
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Image Descriptor Description
5484653 Symptoms Symptoms
5484652 Asexual Spore Conidia.
5484651 Asexual Spore Conidia.
5484650 Asexual Spore Conidia.
5484649 Sign Leaf spot with conidia evident.
5484648 Sign Leaf spot with conidia evident.
5484647 Sign Leaf spot with conidia evident.
5484646 Symptoms Leaf spot.
5485248 Symptoms Infected leaf
5485247 Asexual Spore Conidia.
5485246 Asexual Spore Conidium.
5485245 Asexual Spore Conidium.
5458673 Symptoms Alternaria leaf spot.
5458674 Symptoms Alternaria leaf spot.
5445953 Asexual Spore Produces conidia in chains
1570891 Symptoms Alternaria as secondary invader of kale stem tissue.  Primary cause not known. November 1994
1570890 Symptoms Alternaria as a secondary invader of kale stem tissue.  Primary cause not known. November 1994
5449581 Asexual Spore conidia
5449582 Asexual Spore
5426743 Symptoms Leaf symptoms: dark brown to black areas of tissue.
1436127 Symptoms invades leaves damaged by downy mildew
1234103 Symptoms
1415218 Symptoms Leaf necrosis on seedling. Sept. 21, 2003
5418739 Symptoms Sooty mold symptoms on wheat head
5418744 Symptoms Sooty mold symptoms on wheat head
5426742 Symptoms Black mold/stem canker of tomato
5426745 Culture bottom view of plate at two days
5426746 Culture top view of culture plate at two days
5426747 Asexual Spore The spores were obtained with a tape mount which was stained with Lactophenol Blue and viewed with a compound scope at 40x. The microscope picture was taken at 4 days (2x10x).
5426748 Culture bottom view of culture plate at 4 days
5426749 Culture top view of culture plate at 4 days
5426750 Culture bottom view at 6 days
5426751 Culture top view at 6 days
5429762 Sign
5429763 Sign
5429764 Sign
5429765 Sign
5408095 Asexual Spore
5402957 Symptoms
5402958 Symptoms
5394446 Symptoms Alternaria on lower leaves of camelina
5394447 Symptoms Alternaria on lower leaves of camelina
2178038 Sign
2178022 Sign
2178023 Sign
2178024 Sign
2178025 Symptoms
2178033 Symptoms
2178034 Symptoms
2178037 Symptoms
2178021 Symptoms
2173055 Sign
2173060 Asexual Spore with secondary infection of Scopulariopsis sp.
2173050 Symptoms with secondary infection of Scopulariopsis sp.
2173051 Symptoms with secondary infection of Scopulariopsis sp.
2173053 Symptoms
1525424 Symptoms
1525425 Symptoms
1525426 Symptoms
1525427 Symptoms
1525590 Symptoms Alternaria on sunflower
1525678 Symptoms
1525679 Symptoms
1525680 Symptoms
1525681 Symptoms
5333044 Symptoms
5336095 Symptoms
1525309 Symptoms Altenaria leafspot on Gomphreno
1525310 Symptoms Altenaria leafspot on Gomphrena
1525311 Sign Altenaria leafspot on Gomphrena
1525313 Symptoms Altenaria leafspot on Gomphrena
1525314 Symptoms Altenaria leafspot on Gomphrena
1525315 Symptoms
5372325 Symptoms
5372326 Symptoms
5372327 Symptoms
5372041 Symptoms
5372042 Symptoms
5372040 Symptoms
5372038 Symptoms
5372039 Symptoms
5372037 Symptoms
5372036 Symptoms
5372035 Symptoms
5372034 Symptoms
5372033 Symptoms
5362697 Symptoms A sunflower leaf with Alternaria leaf spot infection caused by Alternaria spp. in the field.
5360401 Symptoms A cabbage leaf with symptoms of Alternaria leaf spot infection caused by the fungus Alternaria spp. in the field.
5360400 Symptoms A cabbage leaf with symptoms of Alternaria leaf spot infection caused by the fungus Alternaria spp. in the field.
5362221 Symptoms Apricot fruits showing symptoms of infection with Alternaria spot (Alternaria sp.).
5356779 Symptoms Castorbean (Ricinus communis) fruits showing symptoms of Alternaria leaf spot (Alternaria sp.).
5356778 Symptoms Castorbean plant (Ricinus communis) leaf showing symptoms of Alternaria leaf spot (Alternaria sp.).
5356777 Symptoms Castorbean plant (Ricinus communis) showing symptoms of Alternaria leaf spot (Alternaria sp.).
5362780 Sign Alternaria leaf spot (Alternaria sp.) on cantaloupe leaves.
5077031 Symptoms Black or brown spot. Concentric rings observed within the spot. A yellow halo often occurs around a spot or group of spots.
5077030 Symptoms Black or brown spot. Concentric rings observed within spot. A yellow halo is often present around a spot or group of spots. Spot will sometimes drop out
1415219 Symptoms Leaf necrosis on seedling. Sept. 21, 2003

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