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: P72217

Please mention P72217 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 P72217 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 4,729 Kb (not recorded) - - - JPEG file
Low Res 659 Kb 1120 by 1080 12.4 by 12.0 15.5 by 15.0 3.7 by 3.6 JPEG file
Web site (as above) (dynamic) 500 by 482 5.5 by 5.3 6.9 by 6.6 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