On Living Ivy

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Chris Johnson
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On Living Ivy

Post by Chris Johnson » Sun Feb 03, 2019 11:21 am

I brought this branch back as it was covered in tiny (100-200 µm) perithecia.

I initially set it for spores and got some which fit well with Diaporthe hederae, but little else does. I then tried a section but they were too small so I but 3 on a slide and was surprised to have 3 different results. The first matched the spores dropped. The second was a mass of conidia, and the third produced banana-shaped spores.

At a total loss - I will post each separately for clarity and to spread the images.
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On Ivy 01.jpg
On Ivy 02.jpg
On Ivy 03.jpg
On Ivy 04.jpg

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Chris Johnson
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Re: On Living Ivy

Post by Chris Johnson » Sun Feb 03, 2019 11:22 am

Second:
Conidia 7.5-9.0 x 2.9-3.6 µm
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On Ivy 05.jpg
On Ivy 06.jpg
On Ivy 07.jpg
Last edited by Chris Johnson on Sun Feb 03, 2019 11:25 am, edited 1 time in total.

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Chris Johnson
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Re: On Living Ivy

Post by Chris Johnson » Sun Feb 03, 2019 11:22 am

Third:
Spores 20.4-26.7 x 2.5-3.1 µm
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On Ivy 08.jpg
On Ivy 09.jpg
On Ivy 10.jpg
On Ivy 11.jpg

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Chris Yeates
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Re: On Living Ivy

Post by Chris Yeates » Sun Feb 03, 2019 10:06 pm

Hi Chris
These pages from Grove's Stem & Leaf Fungi vol. II may cast some light on the middle (and possibly the first) one. Am I correct in thinking that what I am seeing in the third one are asci with elongate spores?
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Grove-1.jpg
Grove-2.jpg
"You must know it's right, the spore is on the wind tonight"
Steely Dan - "Rose Darling"

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Chris Johnson
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Re: On Living Ivy

Post by Chris Johnson » Mon Feb 04, 2019 7:21 am

Thank you Chris, that is a big help.

You are correct regarding the final two images. One in water, t'other in Lugol's.

Regards, Chris

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