Chestnut Blight Cryphonectria parasitica (Murrill) M.E. BarrInvasive    Synonyms: Chestnut Canker, Endothia parasitica.
Kingdom Fungi   >   Phylum Ascomycota   >   Class Sordariomycetes   >   Order Diaporthales   >   Family Valsaceae   >   Genus Cryphonectria   


Chestnut Blight is an invasive species in Maryland (MISC 2022 ).


Chestnut Blight is a microscopic, parasitic fungus that infects chestnut trees (Castanea spp.). The fungus, which causes visible orange cankers on the bark, has had a devastating impact on American Chestnut. The tree had little resistance when the fungus was inadvertently introduced in the early 20th century.

Where to find:

Except for the most isolated trees, every American Chestnut tree is infected by Chestnut Blight. You can find the fungus anywhere you find American Chestnut.

There are 45 records in the project database.

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MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here:

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