Record Summary | epiphyllous back conidiomata of Marssonina state on red spots on leaves of Silverweed |
Found as | Anamorph |
Date | 5 August 2010 |
Associated organism | Potentilla anserina |
OS grid ref | OSGR: TQ07 |
Lat/Lon | 51° 30’ N, 0° 30’ W |
Vice County | Surrey, VC no: 17 |
Country | England |
Voucher | 5 Aug 2010[B] (Please quote this in any queries about this record) |
Notes:
Leaf spots: epiphyllous and on underside of midrib, largely hidden below by leaf tomentum; red with dark purple centres, sometimes dead and grey in the centre with dark purple margins; leaf soon turning yellow and dying. Leaf spots with one to several pycnidia in centre, becoming more abundant as infection progresses.
Pycnidia: black, domed, fragile, developing white spore tendril.
Pycnidial shield: becoming almost invisible in lactophenol once the anthocyanin has diffused away.
Conidia: hyaline, curved-fusiform, 22-27/6-7µm, 1-septate with broader lower cell.
The following literature was used to identify this find:
Unless otherwise expressly stated, all original material on the BioImages website by Malcolm Storey is licensed under the above Creative Commons Licence.
Photographs from other photographers are used with permission but not included under the above CC licence.