Miyagia pseudosphaeria on Sow-thistle

Plant diseases
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JennyS
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Miyagia pseudosphaeria on Sow-thistle

Post by JennyS » Sun May 24, 2015 8:36 pm

I didn't find any rust on Lady's-mantle but found plenty of Miyagia pseudosphaeria on Smooth Sow-thistle, Sonchus oleraceus.

:( Would have posted images but can't see a way to upload and when I tried drag and drop they were too big, though I'd resized them to be less than 500KB
Jenny

JennyS
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Re: Miyagia pseudosphaeria on Sow-thistle

Post by JennyS » Sun May 24, 2015 8:44 pm

Ah ok, just re-read 'How to post images' and resized
w Miyagia pseudosphaeria 150524 007 Sonchus oleraceus.jpg
w Miyagia pseudosphaeria 150524 010 Sonchus oleraceus.jpg
w Miyagia pseudosphaeria 150524-1.jpg
Jenny

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Chris Yeates
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Re: Miyagia pseudosphaeria on Sow-thistle

Post by Chris Yeates » Tue May 26, 2015 7:27 pm

Hi Jenny
for me this is Coleosporium tussilaginis; doesn't look right for Miyagia and I would expect very obvious distinctive rings of dark paraphyses around the sori (see Ellis & Ellis plate 161, and accompanying image). It's also very early in the season for Miyagia.

regards
Chris
Miypse04.jpg
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JennyS
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Re: Miyagia pseudosphaeria on Sow-thistle

Post by JennyS » Wed May 27, 2015 8:28 am

:oops: Doh - thank you very much for the correction Chris, I should have checked Ellis & Ellis before rushing to put a name to it.

Good to see you here!
Jenny

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Re: Miyagia pseudosphaeria on Sow-thistle

Post by rustbucket » Fri May 29, 2015 11:02 am

aecidia out on Sonchus in this part of the world Chris, asper and oleraceus.

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