Botryosphaeria stevensii
Botryosphaeria stevensii is a fungal plant pathogen that causes cankers on several tree species including apple and juniper as well as black dead arm on grape. It causes branch dieback, possibly effecting a large portion of the tree canopy, and if severe it can kill entire plants. Prevention efforts may include careful selection of plants, including resistant cultivars, planting in well-draining loose soils, exposure to light and plant spacing to reduce moisture retention.[1]
| Botryosphaeria stevensii | |
|---|---|
| Scientific classification  | |
| Kingdom: | Fungi | 
| Division: | Ascomycota | 
| Class: | Dothideomycetes | 
| Order: | Botryosphaeriales | 
| Family: | Botryosphaeriaceae | 
| Genus: | Botryosphaeria | 
| Species: | B. stevensii | 
| Binomial name | |
| Botryosphaeria stevensii Shoemaker, (1964) | |
| Synonyms | |
| Botryodiplodia malorum  | |

References
    
- "Ornamental Disease Facts". Ohio State University.