Cercospora depazeoides Cavara (a dematiaceous anamorphic fungus)

Date:	14 October 2007
OS grid ref:	SU56
Lat/Lon:	51° 20' N, 1° 10' W
Location:	Vice County: Berks, VC22, England
Voucher:	14/10/2007[A] (Please quote this in any queries about this record)
Stage or state:	Imperfect stage
Record Summary:	grey leaf spots on live and fading Elder leaves
Associated organism:	on live, fading leaf of Sambucus nigra
Identification 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.