Image Number: 1440009

Symptoms of anthracnose include spotting of the leaves, development of cankers on midribs and veins of leaves, and eventual stunting and/or death of transplants. Leaf spots are at first pinpoint size, water-soaked, and depressed. They enlarge to approximately 3 mm in diameter, are light tan in the center, and have raised dark borders. Veins and midribs are often infected, causing the leaf to become distorted. On plants ready to transplant, large red-brown cankers can develop on the stems and petioles. Severely affected plants are killed. With the aid of a hand lens, fruiting bodies called acervuli can be seen in affected areas. These fruiting bodies produce pink spore masses and may have black bristle-like appendages called setae. The disease is most common in plant beds that are weedy and/or deficient in nitrogen.
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Image location:
United States


Kingdom: Fungi
Phylum: Ascomycota
Subphylum: Pezizomycotina
Class: Sordariomycetes
Subclass: incertae sedis
Order: Phyllachorales
Family: Phyllachoraceae
Genus: Colletotrichum
Subject: Colletotrichum nicotianae Av.-Saccá


Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Solanales
Family: Solanaceae
Genus: Nicotiana
Subject: Nicotiana tabacum (burley type) L.
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Image uploaded:
Monday, January 1, 1990
Image last updated:
Wednesday, March 23, 2011