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10-12-2018 12:00

Tanja Böhning Tanja Böhning

Bonjour,   Hier nous avons trouvé encore une p

09-12-2018 23:06

Joop van der Lee

Found on cow dung. Fruitbody is covered with tufs

28-02-2014 22:14

Salvador Tello

Hola.Tengo este hongo que crece en tierra y no log

08-12-2018 15:13

Per Marstad Per Marstad

This was growing on Fagus, 2-3 mm. The spores are

08-12-2018 20:07

BERNARD CLESSE BERNARD CLESSE

Trouvé sur tronc pourri de fusain ce que je pense

06-12-2018 07:35

Ethan Crenson

Hello all, These were found by my friend recently

07-12-2018 14:42

Edmond POINTE Edmond POINTE

Bonjour,Ressemble à X.cinerea et scruposa sauf qu

07-12-2018 20:39

Georges Greiff

A second fungus found on bryophytes in chalk grass

07-12-2018 17:24

Enrique Rubio Enrique Rubio

Quelqu'un pourrait-il avoir une copie de ce docume

08-12-2018 10:14

BERNARD CLESSE BERNARD CLESSE

Sur branchettes mortes d'aulne glutineux, encore s

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discomycete (Sclerotiniaceae?) on Arundo leaves in Portugal
Lothar Krieglsteiner, 02-02-2018 19:17
Lothar Krieglsteiner

Collected in Portugal, Algarve, nature reserve Fonte Benemola north of Loule, 3.1.2018.


Substrate is Arundo donax, as the leaf remains were partly still adhering to the thick lying stems. Unfortunately, most of the collection is badly ripe but I think I could get most of the important characters. Unripe spores in the asci mostly were much smaller (maybe 12-15 µm) than the free ones I measured here.


The IKI-reaction of the asci is weak and cannot be seen at all asci. For some time, I was not at all sure to have an inoperculate discomycete - but my pictures clearly show the porus.


I think this should be looked for in the Sclerotiniaceae (?) - but I do not have a good idea about the genus and species.


Who can help?


Best regards from Lothar

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Hans-Otto Baral, 02-02-2018 22:59
Hans-Otto Baral
Re : discomycete (Sclerotiniaceae?) on Arundo leaves in Portugal
Hoi Lothar

I see true croziers on your photo, though a bit difficult to recognize, because also basal protuberances occur.  This and the occurrence on Poaceae speaks for Rutstroemia calopus. In my folders this is the unpublished genus Clarireedia which exists only in the web. Actually, this group stands apart from Rutstroemia in phylotrees. It was suggested for the dollarspot disease Sclerotinia homoeocarpa, which clustered with a R. paludosa sequence in CBS (see my homoeocarpa folder).

Zotto
Lothar Krieglsteiner, 02-02-2018 23:48
Lothar Krieglsteiner
Re : discomycete (Sclerotiniaceae?) on Arundo leaves in Portugal

Hello Zotto,


thanks a lot for your expertise. I had thought of R. calopus but got away of it because I found the spores not typical for a Rutstroemia.


Nice to have a name, then :-)


Thanks again and best regards, Lothar