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13-09-2025 14:10

Hymenoscyphus on Rubus
Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Recherche
Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Marthamycetales revision published
Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

13-09-2025 14:01

Otidea platyspora or something else?
Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 23:53

Strickeria kochii?
Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

10-09-2025 17:18

Pseudocoprotus catenipilus ???
Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

dark- and small-spored Sordariomycetes on Fraxinus - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Trichobolus
Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

Hymenoscyphus sp
ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

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Berkleasmium conglobatum (?)
Ethan Crenson, 11-08-2017 17:19
Collected in Vermont in Green Mountain National Forest on a bare branch.  They are tiny green fuzzy cushions less than 1mm in diameter.   I had the idea that they might be Berkleasmium conglobatum because of a similar collection I had seen on Eric Boehm's (now defunct) web site.   But a paper "A synopsis of the genus Berkleasmium..." (Boonsom Bussabant et. al.)  describes B. conglobatum conidiospores as deep fuscous to opaque.  The conidiospores I am seeing are fragile, olive green and translucent.  They are 38-54 x 18-20um and muriform.  Any input would be helpful, thanks!
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  • message #49974
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Hans-Otto Baral, 11-08-2017 19:14
Hans-Otto Baral
Re : Berkleasmium conglobatum (?)
I have seen a similar fungus on dead wood of Acacia in arid Australia, but the conidia were max. 30 µm long. I noticed in this species a strong ionomidotic reaction of the conidia in KOH (orange stain extruding in the medium). Did you test that?

Zotto
Jason Karakehian, 11-08-2017 19:50
Jason Karakehian
Re : Berkleasmium conglobatum (?)
Hi Ethan, I posted this species to our Facebook group in June and I just sent you a message with the link to that post. Here is a link to my post in Mycoportal:

http://mycoportal.org/portal/collections/individual/index.php?occid=4622329

I think your determination is correct. The conidia seem to darken in age to nearly opaque black. The farinaceous or flaky condition of the surface of the conidia is consistent with my observations. Also, you will see nearly black sporodochia in a collection and also these yellow-green sporodochia. These are younger sporodochia that have had the tops rubbed away and you see this yellow tissue (hyphae and conidiogenous cells) beneath.  Best - Jason