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18-05-2019 21:17

Django Grootmyers

Hello, I have been having trouble identifying this

22-05-2019 18:10

Thomas Læssøe

I have encountered scanty materiale of a tiny (!)

21-05-2019 18:13

Blasco Rafael Blasco Rafael

Hola, alguna idea de que genero mirar, me recuerda

20-05-2019 22:07

Ethan Crenson

In New York City on what I believe are raccoon dro

22-05-2019 16:05

Eike- Milorad Heinemann Eike- Milorad Heinemann

Hello together on saturday we found also this Mol

22-05-2019 19:05

Roger Melo Roger Melo

It looks like a composite apothecia on wood of an

21-05-2019 21:41

Eike- Milorad Heinemann Eike- Milorad Heinemann

Hello together on saturday we found this Pyrenope

22-05-2019 11:10

BERNARD CLESSE BERNARD CLESSE

Bonjour à toutes et tous,Auriez-vous une idée su

21-05-2019 22:25

Ron Bronckers

Hi everybody,Maybe someone can help me to obtain a

21-05-2019 11:21

Castillo Joseba Castillo Joseba

Me mandan el material desde Galicia,  recolectado

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Re : Phaeosphaeria => Pleosporaceae => Pleospora abscondita
Riet van Oosten, 18-05-2018 18:38
Riet van OostenHello,

Found 17-05-2018, The Netherlands.
On: Phragmites australis.

Spore sizes: 31.9-32.2-32.6-32.9-34.6-35.0-35.8-36.3-38.3-38.6 x 8.9-10.0-10.0-10.3-10.3-10.6-10.7-10.9-11.3-11.4 µm.
 
Q = 3.3  n = 10

Vagicola vagans doesn't fit .....
Ellis & Ellis p. 465: spore sizes 20-32 x 7-10
Shoemaker and Babcock p. 1574:  23-28 x 8-10

Greetings,
Riet
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Mlcoch Patrik, 11-06-2018 21:11
Mlcoch Patrik
Re : Phaeosphaeria, subgenus Vagispora or ........
This isnt Phaeosphaeria, but rather something from the Pleosporaceae - characteristic presence longitudinate septum.
Riet van Oosten, 11-06-2018 21:24
Riet van Oosten
Re : Phaeosphaeria, subgenus Vagispora or ........
Hello Patrik,
Thank you very much for your help!
Greetings, Riet
Chris Yeates, 13-06-2018 04:49
Chris Yeates
Re : Phaeosphaeria, subgenus Vagispora? => Pleosporaceae
Hello Riet

Despite the slightly larger spore measurements I would still be tempted to call this Phaeosphaeria vagans. In my experience there can be variation in ascospore dimensions with these fungi.

Also, the presence of muriform spores does not exclude Phaeosphaeriaceae - they are known in this family.

Best wishes

Chris
Riet van Oosten, 13-06-2018 08:44
Riet van Oosten
Re : Phaeosphaeria, subgenus Vagispora? => Pleosporaceae
Hello Chris,

Yesterdag I searched in the direction Patrik suggested.

I came across Pleospora abscondita.

- In Van Ryckegem, G. (2005) "Fungi on common reed (Phragmites australis). Fungal diversity, community structure and decompositions processes": "asci 110-130 x 15-20 um, ascospores 28-35 x 10-13 um, 5-septate, with one to several longitudinal septa (end cells without longitudinal septa)

- In the book "Niet zomaar een bos....!!; natuuronderzoek op de cm2 in het Coovels Bos":  "asci 150-200 x 15-20, ascospores 33.3-41.0 x 8.1-10.8 µm, 5-7-(8)-septate, with one (partial) longitudal septum".

Listed in "artikelen (2)" and "standaardwerken (1)" on https://www.verspreidingsatlas.nl/0766010#

This could fitt.

Best wishes, Riet
Mlcoch Patrik, 13-06-2018 09:52
Mlcoch Patrik
Re : Phaeosphaeria, subgenus Vagispora? => Pleosporaceae
I don´t see now P. vagans and i dont´t also excude something from Phaeosphaeriaceae (for example Allophaeosphaeria, Phaeosphaeria (Vagispora) phragmiticola and vagans), but presence longitudinate septus is far more typical for Pleosporaceae. According to Shoemaker P. phragmiticola and vagans they has spore 23-30 um long, and here are spore larger (30-40 um).
However, i just found it information, that according to Müller (1950, as Leptosphaeria vagans) has P. vagans spore 36-42 x 7-9 um, therefor i have to agree with Chris .
Riet van Oosten, 17-06-2018 09:18
Riet van Oosten
Re : Phaeosphaeria, subgenus Vagispora? => Pleosporaceae => Pleospora abscondita
Dear Chris, dear Patrik,

I sent a mail to Henk Lammers (Dutch specialist), one of the authors of the book "Niet zomaar een bos ....!!".


With reservation (he didn't see the real material) he thinks it is Pleospora abscondita Tomorrow I will send him the material for a final decision.


Without your help this species of 17-05-2018 would have been nameless ....


Thank you so much! Greetings, Riet

Riet van Oosten, 20-06-2018 23:27
Riet van Oosten
Re : Re : Phaeosphaeria => Pleosporaceae => Pleospora abscondita
Got a message from Henk Lammers, it is indeed Pleospora abscondita!