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09-07-2014 01:48

Nick Aplin

Salut à tous, I have collected this species whi

10-07-2014 00:57

Yannick Mourgues Yannick Mourgues

Sur bois mort décortiqué au sol de cette espèce

07-07-2014 17:55

Hans-Otto Baral Hans-Otto Baral

HiI would like to see the following articles:Kendr

08-07-2014 16:58

Enrique Rubio Enrique Rubio

Can somebody help me with this article? Nannfeldt

08-07-2014 20:45

Esquivel-Rios Eduardo

Hi allFound in dead wood in the soil.  Disc 0.5 -

07-07-2014 22:56

Marcus Yeo

This minute discomycete was growing on dead leaves

21-05-2014 20:00

Miguel Ãngel Ribes Miguel Ángel Ribes

I have this Gyromitra (Discina), 5-8 cm diam., fro

08-07-2014 12:16

Hans-Otto Baral Hans-Otto Baral

Here I have another request for Can. J. Bot.:Smerl

07-07-2014 20:09

Bometon Javier Bometon Javier

En Rosa.Apotecios de 0,8-0,9mmEsporas 8-11X1,5-2 u

03-07-2014 21:46

Marcus Yeo

This pyrenomycete was growing on a fallen branch o

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Tricky Tubeufiaceae?
Nick Aplin, 09-07-2014 01:48

Salut à tous,


I have collected this species which I can't identify which grows sparsely on (living) ascomata of Echinosphaeria canescens in the South of England (June 8th 2014):


Pseudothecia pale orange to pink, to 270 µm diam.


Ascospores 62-135 x 3.3- 4.7 µm, hyaline, multiguttulate, (11)-14-(16) septate, tending to be more cylindrical towards the apical end and more acute towards the basal end. Helicoidally twisted inside the ascus but seeming to 'unwind' as the ascus reaches full turgor.


Asci thick-walled (especially when dead), no apical apparatus.


Hairs encircling the ostiolar area, hyaline, aseptate, thick-glassy walled, sometimes aggregating into 'tufts', to 160µm long.


There were three types of conidia present that I thought might be of interest - Types of conidia I usually associate with aquatic habitats (particulaly the Articulospora-like ones) but this was collected in a dry place, well away from any water source.


I should perhaps add that I'm not sure if there is any material left on the branch I collected - Trying to find the tiny pseudothecia in amongst the Echinosphaeria spines is quite difficult!


I was quite unsatisfied with my photographs of the species, so I also prepared a sketch that may (or may not) make things clearer.


Can anyone help?


Amitiés,

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Hans-Otto Baral, 09-07-2014 10:07
Hans-Otto Baral
Re : Tricky Tubeufiaceae?
We had a similar species, probably the same genus:

http://www.ascofrance.fr/forum?id=30212

Spores shorter: 48-55 x 2.5-5.8 µm , with much less septa (3-5).
On Fagus bark in association with Tubeufia cerea.

The Trinacrium-like conidia you have observed belong to Orbiliaceae, but the curved ones might belong to the pyreno.

Zotto

Nick Aplin, 10-07-2014 23:45
Re : Tricky Tubeufiaceae?

Hi Zotto,


It took me a little while, but I found your post (the link takes me somewhere else) and I agree, our species are very close!


Trinacrium refers to the three-pronged conidia, right? There were few of these compared to the other two types - The Y-shaped conidia were the most abundant.


I have studied 'The Tubeuficeae & Similar Loculascomycetes' Rossman but got absolutely nowhere! If anyone has the key to genera included in this article I would be interested in seeing it (I picked up the article here on Ascofrance and it's missing a page or two...)


Nick