Entomosporium Leaf Spot

(Diplocarpon mespili)

Conservation Status
Entomosporium Leaf Spot
 
  IUCN Red List

not listed

 
  NatureServe

not listed

 
  Minnesota

not listed

 
           
           
           
           
           
           
           
 
Description
 
 

Entomosporium Leaf Spot is a disease caused by the fungus Diplocarpon mespili. The fungus effects plants in the Amygdaloideae subfamily of the Rosaceae (rose) family. In Minnesota this includes apple, crabapple, serviceberry and hawthorn. In other areas it includes pear, quiince, loquat, photinia, and pyracantha. The disease is sometimes referred to by a name which includes the species on which it appears, such as Quince Leaf Blight, Hawthorn Leaf Blight, and Leaf Spot of Red Tip Photinia.

Entomosporium Leaf Spot appears in early summer as reddish-brown, angular spots up to 9 16 in diameter. In the center of each spot there is a minute black fruiting body (avervuli) that is visible only with a hand lens. As the fungus spreads the spots enlarge and the leaf yellows, leaving green halos around the brown spots. The leaf eventually dies and falls prematurely. Twigs and branches may develop small areas of dead tissue (cankers). The cankers may eventually girdle the twig or branch causing dieback.

 
     
 

Similar Species

 
     
     
 
Habitat and Hosts
 
 

Apple, crabapple, serviceberry and hawthorn

 
     
 
Ecology
 
 

Season

 
 

Early summer to fall; sporulation in early to mid-July.

 
     
 
Distribution
 
 

Distribution Map

 

Sources

4, 7, 26, 29, 30, 77.

 
  6/9/2022      
         
 

Occurrence

 
 

 

 
         
 
Taxonomy
 
  Kingdom Fungi (fungi)  
  Subkingdom Dikarya  
  Phylum Ascomycota (sac fungi)  
  Subphylum Pezizomycotina  
  Class Leotiomycetes  
 

Order

Helotiales  
 

Family

Drepanopezizaceae  
 

Genus

Diplocarpon  
       
 

Synonyms

 
 

Diplocarpon maculatum

Diplocarpon soraueri

Entomopeziza mespili

Entomopeziza soraueri

Entomosporium maculatum

Entomosporium mespili

Entomosporium maculatum var. domesticum

Fabraea maculata

Stigmatea mespili

Xyloma mespili

 
       
 

Common Names

 
 

Blackspot

Entomosporium Leaf Spot

Hawthorn Leaf Blight

Leaf and Friut Spot of Rosaceae

Leaf and Rose Spot of Rosaceae

Leaf Spot of Red Tip Photinia

Quince Leaf Blight

 

 

 

 

 

 

 

 

 
 
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    Entomosporium Leaf Spot   Entomosporium Leaf Spot  
           
    Entomosporium Leaf Spot   Entomosporium Leaf Spot  

 

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Other Videos
 
  Entomosporium Leaf Spot of Hawthorn
Plant Pathology
 
   
 
About

Published on Sep 13, 2013

Leaf spot disease of Indian hawthorn, caused by the fungus Entomosporium.

   

 

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