Cercospora depazeoides Cavara, (a dematiaceous anamorphic fungus)


14 Oct 2007 at OSGR: SU56 in Berks, England

Record Summarygrey leaf spots on live and fading Elder leaves
Found asAnamorph
Date14 October 2007
Associated organismSambucus nigra
OS grid refOSGR: SU56
Lat/Lon51° 20’ N, 1° 10’ W
Vice CountyBerks, VC no: 22
CountryEngland
Voucher14 Oct 2007[A]
(Please quote this in any queries about this record)

Notes:

Silver-grey to pale brown leaf-spots; often several together in a group, limited by midrib and major veins; round or elliptical except where distorted by neighbours or vein; 1.5-4mm along longest diameter; on Elder leaves.

Leaf-spot upper surface: silver grey to pale brown, with narrow dark brown border, punctate with dark brown clusters of conidiophores emerging through the stomata

Leaf-spot lower surface: dark brown from massed clusters of conidiophores, sunken.

Conidiophores: densely fasciculate, pale greyish brown above, rusty brown in densely crowded base, non-septate, cylindric, non-septate, sinuous near apex, with conidium scars at apex and on bends of sinuosities below.

Conidia: very pale greyish; very narrowly obclavate; arcuate or sinuate; 5-9 septate; 65-120/5µm.

The following literature was used to identify this find:

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