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07-01-2026 10:24

Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

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Tatraea sp. on indet. hardwood The Swag, Great Sm

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Dear Forum,On a barkless Populus I found some smal

10-11-2021 17:33

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Add-on topic http://www.ascofrance.com/forum/7059

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cf. Chaetospermum on XylariaCosby Campground, Grea

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I was happy to find these orange asmocyetes which

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Arachnopeziza obtusipila?
Yatsiuk Iryna, 11-11-2011 16:13
Yatsiuk Iryna

Good evening!


There is one more finding, from dead wood of Tilia cordata.


Spores 21-36*2,5-3,6 um, guttulate, from 0-septate to 3-5-septate


Asci IKI blue


Other microstructures are shown on photos.


What is your opinion concerning this specimen?


With best wishes, 


Irina


 

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Hans-Otto Baral, 11-11-2011 16:24
Hans-Otto Baral
Re : Arachnopeziza obtusipila?
Yes, I think this is A. obtusipila. I only miss larger oil drops in the spores which I saw in this species.

Zotto
Yatsiuk Iryna, 11-11-2011 16:37
Yatsiuk Iryna
Re : Arachnopeziza obtusipila?

Thank you, Zotto!


That's presumably one more new discomycete for my country


Irina

erio camporesi, 14-11-2011 21:26
erio camporesi
Re : Arachnopeziza obtusipila?
Hi all,

   I think to have collected the same ascomycete the last Friday on a scale of cone of Pinus pinaster. 


Erio


NB The microphoto of the hair is small-scale.

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Yatsiuk Iryna, 15-11-2011 17:53
Yatsiuk Iryna
Re : Arachnopeziza obtusipila?

Looks like very similar, except spore guttules (they are larger than in my specimen)


With best regards,


Irina

erio camporesi, 15-11-2011 21:41
erio camporesi
Re : Arachnopeziza obtusipila?
Hi Irina,

   a more detailed microphoto is attached. The septa are more visible in Melzer.


Erio

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Yatsiuk Iryna, 16-11-2011 15:06
Yatsiuk Iryna
Re : Arachnopeziza obtusipila?

As is stated in Otto Baral's paper on vital taxonomy (1992), spores quickly die in Melzer reagent and therefore septae or structures which look like septae are visible.


Sincerely,


Irina