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19-06-2018 21:45

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous, Je n'arrive pas à voi

18-06-2018 04:55

Andgelo Mombert

Bonsoir,Sur tige morte de Gentiana lutea, en compa

19-06-2018 09:47

Greiff Georges

Hi all, I encountered this yesterday and think it

19-06-2018 09:34

Greiff Georges

Found on rotting twigs in wet woodland. Fruits wh

18-06-2018 19:50

Elisabeth Stöckli

Bonsoir, Trouvé sur feuille de Rubus (à 965m, R

18-06-2018 13:54

Castillo Joseba Castillo Joseba

Esta posible Peziza en bosque de  piceas,  sobre

18-06-2018 13:56

Castillo Joseba Castillo Joseba

en bosque de abetos,  sobre tierra   ...  A v

11-06-2018 20:34

Andgelo Mombert

Bonsoir,Sur tige morte de plante, probablement d'A

18-05-2018 18:38

Riet van Oosten Riet van Oosten

Hello,Found 17-05-2018, The Netherlands.On: Phragm

17-06-2018 00:36

Alan Rockefeller Alan Rockefeller

Looks like what is passing for Caloscypha fulgens

« < 1 2 3 4 5 > »
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

Vagispora 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