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| Record Summary | Polythrincium anamorph on underside of leaflets of White Clover |
| Found as | Infection |
| Date | 2 August 2007 |
| Associated organism | Trifolium repens |
| OS grid ref | OSGR: SU46 |
| Lat/Lon | 51° 20’ N, 1° 20’ W |
| Vice County | Berks, VC no: 22 |
| Country | England |
| Voucher | 2 Aug 2007[B] (Please quote this in any queries about this record) |
Notes:
Leaf lamina upper surface with small yellow spots with diffuse borders and grey centres. As they age the tissue dies to form a depressed grey spot.
Lamina lower surface with rough, spherical black colonies arranged in clusters on the leaf spots, eventually covering most of leaf. Infection evenly distributed over whole leaflet.
Petiole unaffected, but lamina eventually turning yellow and dying.
Conidia: grey, smooth, thin-walled, 1-septate, amygdaliform, 16.5-20.5/10-13µm.
Conidiophores: grey, sinuous, 5µm diam, arising from swollen 10µm diam base with septum below.
The following literature was used to identify this find:
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