Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Scattered, somewhat angular, purple-brown spots on upper leaf surface.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Corresponding, less conspicuous, brown spots on lower leaf surface.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Numerous scattered, somewhat angular, purple-brown spots on upper leaf surface.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Corresponding, less conspicuous, brown spots on lower leaf surface.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Single spot with dark green-black "synnemata", clusters of conidiophores and conidia, coming up from infected tissue.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
View across single spot with dark green-black "synnemata", clusters of conidiophores and conidia, coming up from infected tissue.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Close-up of dark green-black "synnemata", clusters of conidiophores and conidia, coming up from infected tissue.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Synnemata with conidia of the asexual fungus, Pseudocercospora vitis.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Synnema with conidia of the asexual fungus, Pseudocercospora vitis.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Conidia beginning to form on a synnema of the asexual fungus, Pseudocercospora vitis.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Conidia of the asexual fungus, Pseudocercospora vitis.
Scattered, somewhat angular, purple-brown spots on upper leaf surface.
Corresponding, less conspicuous, brown spots on lower leaf surface.
Numerous scattered, somewhat angular, purple-brown spots on upper leaf surface.
Corresponding, less conspicuous, brown spots on lower leaf surface.
Single spot with dark green-black "synnemata", clusters of conidiophores and conidia, coming up from infected tissue.
View across single spot with dark green-black "synnemata", clusters of conidiophores and conidia, coming up from infected tissue.
Close-up of dark green-black "synnemata", clusters of conidiophores and conidia, coming up from infected tissue.
Synnemata with conidia of the asexual fungus, Pseudocercospora vitis.
Synnema with conidia of the asexual fungus, Pseudocercospora vitis.
Conidia beginning to form on a synnema of the asexual fungus, Pseudocercospora vitis.
Conidia of the asexual fungus, Pseudocercospora vitis.