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09-05-2025 19:10

Orbilia on Betula bark
Enrique Rubio Enrique Rubio

Hi to everybody.This Orbilia (apos up to 0.5 mm),

09-05-2025 19:25

Lichenological literature
Viktorie Halasu Viktorie Halasu

Hello, would you please recommend me a key to gen

09-05-2025 16:01

Phragmocephala spec.
Thomas Flammer

I found a black cushon which might eventually be 

02-05-2025 13:29

Bryomyces
Isabelle Charissou

Bonjour, j'aimerais savoir s'il y a eu des public

06-05-2025 13:37

Looking for digital literature of Munk Anders
Thomas Flammer

Munk, Anders (1953). The System of the Pyrenomycet

08-05-2025 20:50

Greyish aquatic asco
Andreas Jacob

Good evening, due to contstant drought I started

07-05-2025 18:29

Olla or Urceolella?
Francois Guay Francois Guay

I found this small hyaline ascomycete on moist, de

08-05-2025 02:22

White Lasiobelonium?
Francois Guay Francois Guay

I found this white, hairy ascomycete on the bark o

08-05-2025 18:32

On Yucca filamentosa - conidia like Robillarda, but aseptate
Ethan Crenson

Hello all, I was looking at leaves of Yucca from

08-05-2025 08:59

Xylaria para ID 0402
Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, (España) , reco

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Patellaria on Tilia
Martin Bemmann, 22-06-2009 22:57
Martin BemmannHello all,

this is a today's find on a dead branch of Tilia. I found the same or similar one in January but could not end in a "terminating" determination. So here is another try:
  • message #8281
Martin Bemmann, 22-06-2009 22:59
Martin Bemmann
Re:Patellaria on Tilia
Asci are 134-142 x 16-21 µm:
  • message #8282
Martin Bemmann, 22-06-2009 23:00
Martin Bemmann
Re:Patellaria on Tilia
Spores 40-50x9-10 µm:
  • message #8283
Martin Bemmann, 22-06-2009 23:01
Martin Bemmann
Re:Patellaria on Tilia
The exudate is darkblue with a greenish touch:
  • message #8284
Martin Bemmann, 22-06-2009 23:02
Martin Bemmann
Re:Patellaria on Tilia
IKI reaction is negative:
  • message #8285
Martin Bemmann, 22-06-2009 23:04
Martin Bemmann
Re:Patellaria on Tilia
A detail of the asco-tip (again in IKI):
  • message #8287
Martin Bemmann, 22-06-2009 23:09
Martin Bemmann
Re:Patellaria on Tilia
and a view of the mess on my preparation (IKI) with paraphyses and a lot of "free oildrops"(?)

Is it P. crassispora?

Best regards, Martin
  • message #8291
Jacques Fournier, 23-06-2009 10:18
Jacques Fournier
Re:Patellaria on Tilia
Hi Martin,
I do not know P. crassispora. Where is it cited?
Why not merely P. atrata? Hawksworth and Kutorga (1997) gave the wide range of (20-) 30-45 (58) x (6-)7-9(12) µm for the spores of this taxon. You should also check the number of septa, they gave 5-11.
Best wishes,
Jacques
Martin Bemmann, 23-06-2009 10:39
Martin Bemmann
Re:Patellaria on Tilia
Hi Jaques,

P. crassispora is a nom.prov. in the Key on Zotto's DVD. One of the features that separates them from atrata is the colour of the exudate that should not be bluish at atrata but "blackish-olive-brownish".

Best regards,
Martin
Jacques Fournier, 23-06-2009 10:45
Jacques Fournier
Re:Patellaria on Tilia
yes I agree this bluish colour is unusual and not typical for atrata. Glad to learn that! Thanks!
jacques
Martin Bemmann, 23-06-2009 22:56
Martin Bemmann
Re:Patellaria on Tilia
Thank you Jacques for your confirmation of the exudate colour.
I never saw atrata as it should be...
That's why I was unsure and asked for comments.

Best regards, Martin