Monday, July 13, 2015

Entomosporium leaf spot on Indian Hawthorn

Entomosporium leaf spot on Indian hawthorn
(Photo: NMSU - PDC)
Featured Diagnosis: Entomosporium leaf spot on Indian hawthorn (Rhaphiolepis indica) – Entomosporium leaf spot is a fungal disease caused by Entomosporium sp. It is common on trees and shrubs in the rose (rosaceae) family. It can be particularly troublesome on Indian hawthorn and red tip photinia. In some areas, these shrubs are no longer widely used in the landscape because of their susceptibility to this disease. Other hosts of this pathogen include pyracantha, pear, quince, loquat, and mountain ash. The primary symptom of this disease is the development of reddish-purple spots on the foliage. The fungus produces characteristic “insect-shaped” spores which are diagnostic.

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Characteristic "insect-shaped" spores
of Entomosporium sp. (Photo: NMSU-PDC)

Leaf spots on Indian hawthorn caused by
Entomosporium sp. (Photo: NMSU-PDC)

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