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20-03-2018 23:52

Ralf Dahlheuser Ralf Dahlheuser

Hello forum,would anyone have literature about Pod

18-03-2018 23:45

Valencia Lopez Francisco Javier

Hola a todos/asEstas Tricharina crecían en un peq

19-03-2018 17:34

Thomas Læssøe

Sweden, Scania, Bårslöv, 30.XI.1994, leg. Sven-

19-03-2018 20:42

Marc Detollenaere Marc Detollenaere

Good evening everyone, On dung of sheep I recentl

20-03-2018 19:16

Bernard Declercq Bernard Declercq

Good evening, Colleted on corticated twigs of Pla

19-03-2018 15:15

Thomas Læssøe

Sweden, Scania, Kavrö, 22.VI.2017, on a dicot ste

12-03-2018 23:39

Marc Detollenaere Marc Detollenaere

  Good evening everybody, In La Ste-Baume in Pr

16-03-2018 14:14

Christopher Engelhardt Christopher Engelhardt

Hi,these grow on what I think to be old & dry

17-03-2018 18:57

Blasco Rafael Blasco Rafael

Hola, he recogido una posible Orbilia en rama de E

03-03-2018 08:10

Nivalys Sylvain Nivalys Sylvain

Bonjour à tous !Comme le précédent, voici un as

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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
  • message #49974
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?

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:

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