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08-08-2018 19:44

Andgelo Mombert

Bonsoir à tous,Apothécies de 0,5-1 mm de diamèt

17-08-2018 21:50

Greiff Georges

Hello, Today, on two Fraxineus trees about 100m a

15-08-2018 21:56

Andgelo Mombert

Bonsoir à tous,Sur pétioles et nervures de feuil

16-08-2018 16:08

Blasco Rafael Blasco Rafael

Hola, he recogido esta muestra sobre tronco de Abi

15-08-2018 15:45

Gernot Friebes

Hi,we collected this Scutellinia a few days ago on

11-08-2018 19:10

Sven Heinz Sven Heinz

Hello together, does anyone have any idea what th

15-08-2018 10:24

Gernot Friebes

Hi,found on the bark of an old Picea tree at appro

13-08-2018 09:43

Pintos Angel Pintos Angel

hello, anybody has?Barr ME, Cannon PF (1994) Calos

08-08-2018 12:43

Castillo Joseba Castillo Joseba

De ayer en bosque de Fagus, entre el musgo sobre l

12-08-2018 10:01

Tapio Kekki

These were growing on gravel of a creek. Place is

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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!