Accès membres

Mot de passe perdu? S'inscrire

09-06-2026 18:32

Vibrisseaceae(?) sur phragmites
Camille Mertens

Sur morceau de roseau immergé 0,5 - 0,7 mm de dia

08-06-2026 10:16

Seemingly Helicosporeous fungus
Spooren Marco Spooren Marco

I don`t have a clou about this fungus,it is not in

08-06-2026 17:00

Hamatocanthoscypha on Osmunda?
François Bartholomeeusen

Good day everyone, On June 5 2026, I collected de

07-06-2026 18:18

Mollisia
Mario Schulz

Hello everyone, i found on 31.5 the following Mol

07-06-2026 15:10

Hymenoscyphus albidus?
William Slosse William Slosse

Hello everyone,On 05-06-26, I found following asco

05-06-2026 11:02

Laterally compressed apothecia with blue pigments, bitunicate asci and 4-celled brown spores - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10596691

07-06-2026 12:09

Lachnum sp. (nudipes) sur Filipendula
François Freléchoux François Freléchoux

Bonjour, Voici une brève description de ce qui m

07-06-2026 12:43

Mycoparasite of Pyrenomycete?
Steve Clements

Bojour. This was a strange find on a stick on my

12-07-2015 00:05

Peziza paludicola or something else?
Nedim Jukic Nedim Jukic

This one from the same locality as the previous on

06-06-2026 17:44

Immature Hyaloscypha fuckelii?
Steve Clements

Bonjour, This disco was on planed wood 3 x 1.5 cm

« < 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

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
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
  • message #53484
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!