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11-08-2017 17:19

Berkleasmium conglobatum (?)
Ethan Crenson

Collected in Vermont in Green Mountain National Fo

11-08-2017 16:48

Phaeohelotium epiphyllum (?) on Liquidambar seedpods
Ethan Crenson

Hello, I think that this is Phaeohelotium epiphyll

11-08-2017 17:57

Black stromatal pyrenomycete with short necks
Ethan Crenson

From Staten Island, New York on branches of hardwo

06-08-2017 20:08

Hymenoscyphus
Andgelo Mombert Andgelo Mombert

Bonsoir à tous,En ripisylve, sous Salix, sur supp

10-08-2017 21:55

Pachyella sp.
Zoltan Lukacs Zoltan Lukacs

Hi to all,is it a Pachyella violaceonigra?Many tha

09-08-2017 19:24

Literature request: Species of Hypomyces and Nectria occurring on Discomycetes
Ethan Crenson

Does anyone have this?:Rogerson, C.T.; Samuels, G.

05-08-2017 18:54

Geopora tenuis sur sol argileux ?
Bernard CLESSE Bernard CLESSE

Bonsoir à tous,J'ai trouvé ce que je pense être

08-08-2017 17:12

Peziza succosella?
Malcolm Greaves Malcolm Greaves

This Peziza was on wet soil at the side of a mixed

08-08-2017 12:15

Diatrype
David Vaudoré David Vaudoré

BonjourJ'ai trouvé ce Diatrype sur une branchette

07-08-2017 14:13

un petit poilu
David Vaudoré David Vaudoré

Bonjour à tous.En compagnie de Tubeufia cerea j'a

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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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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