Observation 20601: Claviceps purpurea (Fr.) Tul.
When: 2009-04-25
Herbarium specimen reported

Notes: These are from the University of Wisconsin-La Crosse herbarium. The two photographs of the ergot sclerotia on rye were taken with a Canon Powershot A560 in Macro mode and these photos were resized using Image-J. The two micrographs were taken from prepared slides of C. purpurea stromata, the slides were produced by Triarch. Microscopic images were processed as follows:

image 1: Specimen: C. purpurea stromata: perithecia
Microscope: Nikon E600
Magnification: 10x ocular lens & 10x objective lens (100x)
Field Type: Brightfield
Processing: Cropped using Image-J
Sharpened using “Sharpen” function in Image-J
Brightness adjusted in Image-J, 0 was reset to
42 on color scale. Scale bar added with Image-J.

image 2: Specimen: C. purpurea stromata: perithecia
Microscope: Nikon E600
Magnification: 10x ocular lens & 60x objective lens (600x)
Field Type: DIC
Processing: Sharpened using “Sharpen” function in Image-J
Brightness adjusted in Image-J, 0 was reset to
25 on color scale. Scale bar added with Image-J.

[admin – Sat Aug 14 02:07:11 +0000 2010]: Changed location name from ‘University of Wisconsin-La Crosse’ to ‘University of Wisconsin La Crosse, La Crosse, Wisconsin, USA

Permission was given to Robert Hallock to use the second and third figures in a scientific article about ergotism, published in the Toxicology and Industrial Health journal:
Belser-Ehrlich S, Harper A, Hussey J, Hallock R. 2013. Human and cattle ergotism since 1900: symptoms, outbreaks, and regulations. Toxicol Ind Health. 29(4):307-16. DOI: 10.1177/0748233711432570. Epub 2012 Aug 17.

Species Lists

Images

42002
42004
Appeared as “Figure 2” in the following journal article: Belser-Ehrlich S, Harper A, Hussey J, Hallock R. 2013. Human and cattle ergotism since 1900: symptoms, outbreaks, and regulations. Toxicol Ind Health. 29(4):307-16. DOI: 10.1177/0748233711432570. Epub 2012 Aug 17.
42005
Appeared as “Figure 3” in the following journal article: Belser-Ehrlich S, Harper A, Hussey J, Hallock R. 2013. Human and cattle ergotism since 1900: symptoms, outbreaks, and regulations. Toxicol Ind Health. 29(4):307-16. DOI: 10.1177/0748233711432570. Epub 2012 Aug 17.
42006

Proposed Names

93% (3)
Eye3 Eyes3
Recognized by sight
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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trippy, man! love the micro shots, and the action photo of the shooting asci…
By: Debbie Viess (amanitarita)
2009-04-27 00:49:54 AEST (+1000)

Created: 2009-04-26 15:45:32 AEST (+1000)
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