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| Record Summary | Marssonina state causing black leaf-spots on Walnut |
| Found as | Anamorph |
| Date | 8 October 2009 |
| Associated organism | Juglans regia |
| OS grid ref | OSGR: SU57 |
| Lat/Lon | 51° 30’ N, 1° 10’ W |
| Vice County | Berks, VC no: 22 |
| Country | England |
| Voucher | 8 Oct 2009[A] (Please quote this in any queries about this record) |
Notes:
Overwintered outdoors for it to grow perithecia which were harvested on 28 May 10.
Minute, long, pale tipped, blackish necks of perithecia emerging from upper surface of dead leaves, especially along the veins.
Asci: 8-spored. Ascospores: fusiform, 1-septate.
The following literature was used to identify this find:
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