BioImages: The Virtual Field-Guide (UK)

Podosphaera fusca (Fr.) U. Braun & Shishkoff, 2000 (a powdery mildew)? (Identification not confirmed)

Record info

Warning: Identification questionable
Date: 25 August 2007
Location: Mid-west Yorkshire, England
Voucher: 25/08/2007[E]
State: Infection
Record Summary: Powdery mildew on Broad-leaved Ragwort
Associated organism: on live leaf of Senecio fluviatilis
Image Reference: P72216

Please mention P72216 in any enquiries regarding this image.

Cleistothecia - with pycnidia of Ampelomyces quisqualis - enlarged

Podosphaera fusca (Fr.) U. Braun & Shishkoff, 2000 (a powdery mildew), Cleistothecia - with pycnidia of Ampelomyces quisqualis - enlarged

(The cleistothecia are darker, shiny and spherical)

Photography

Malcolm Storey Canon EOS400D digital SLR and MPE 65mm x1 to x5 macro lens.
Copyright Image Copyright © Malcolm Storey, 2007, www.bioimages.org.uk. Some rights reserved.

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Image Files available

Image P72216 exists at the following resolutions:

Type File size Image size
pixels
Screen size - inches
(MS Windows @ 90 ppi)
Screen size - inches
(Macintosh @ 72 ppi)
Print - inches
(@ 300 dpi)
Format
Digital Negatives 4,439 Kb (not recorded) - - - JPEG file
Low Res 607 Kb 1078 by 1062 11.9 by 11.8 14.9 by 14.7 3.5 by 3.5 JPEG file
Web site (as above) (dynamic) 500 by 493 5.5 by 5.4 6.9 by 6.8 1.6 by 1.6 JPEG file

Note: The MS Windows & Macintosh screen ppi values are illustrative/traditional and may not apply to your monitor.

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Malcolm Storey is licensed under a Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales