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: P72214

Please mention P72214 in any enquiries regarding this image.

Cleistothecia - with pycnidia of Ampelomyces quisqualis - magnified

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

(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 P72214 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 3,692 Kb (not recorded) - - - JPEG file
Low Res 547 Kb 1919 by 1064 21.3 by 11.8 26.6 by 14.7 6.3 by 3.5 JPEG file
Web site (as above) (dynamic) 500 by 277 5.5 by 3.0 6.9 by 3.8 1.6 by 0.9 JPEG file

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

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