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05-05-2026 22:40

Plagiostoma on Salix
Gernot Friebes

Hi,I believe this is a Plagiostoma growing on a Sa

04-05-2026 18:13

Black rod-like structures with branching curved conidiophores
Stephen Martin Mifsud Stephen Martin Mifsud

ID request for what seems to be a true aquatic fun

04-05-2026 16:39

Black pseudothecia on submerged foliar debris - Pleospora sp.
Stephen Martin Mifsud Stephen Martin Mifsud

ID request: This specimen was collected in Malta o

28-07-2011 18:31

Velenovsky book "Monographia Discomycetum Bohemiae"
Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

28-04-2026 20:07

Marthamycetales? - from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

04-05-2026 09:50

Una en semilas de Acacia
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia,(España) re

03-05-2026 11:38

En dunas
Castillo Joseba Castillo Joseba

Me mandan el material seco, recolectado en dunasLo

02-05-2026 12:42

Hilfe :pour cette éventuelle Orbiliaceae
Alain BRISSARD

Bonjour à tousJeuidi 30 avril dernier on m'a remi

02-05-2026 13:06

Small perithecia on Oenanthe crocata
Pauline. Penna

Bonjour  Please can someone help me with this id

01-05-2026 22:45

Cheilymenia coprophile
Thierry Blondelle Thierry Blondelle

Bonjour à tous, Une récolte sur bouse séchée d

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Hysterioid ? growing on pyrenomycete
Ethan Crenson, 24-01-2018 19:58
In New York City, a friend found these clusters of tiny globose fruiting bodies - none larger than .2mm in diameter.  They appear to be growing on an old pyrenomycete, possibly Jackrogersella multiformis.  I thought they were reminiscent of Anteaglonium species (I encounter A. globosum and A. parvulum in New York).  However, the spores are brown didymospores, measuring about 11.8 - 12.3 by 4.5 - 5µm. Asci are about 55 - 60 by 7.5µm.  Any ideas?  I have read in Boehm et al. (2009) of the monotypic genus Actidiographium with "pigmented one-septate ascospores", but I can't find much information other than that.
Thanks in advance!
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Gernot Friebes, 24-01-2018 20:04
Re : Hysterioid ? growing on pyrenomycete
This could be Immotthia atrograna.

Best wishes,
Gernot
Ethan Crenson, 27-01-2018 01:21
Re : Hysterioid ? growing on pyrenomycete
Thank you Gernot!  I think that's it!
Andrew N. Miller, 27-01-2018 16:09
Andrew N. Miller
Re : Hysterioid ? growing on pyrenomycete
What about Immothia hypoxylon since it is growing on an old species of Hypoxylon?

Andy
Gernot Friebes, 27-01-2018 17:46
Re : Hysterioid ? growing on pyrenomycete
Immotthia hypoxylon is a synonym of I. atrograna according to Jaklitsch et al.: https://www.zobodat.at/pdf/OestZPilz_11_0093-0106.pdf

Best wishes,
Gernot
Andrew N. Miller, 27-01-2018 18:00
Andrew N. Miller
Re : Hysterioid ? growing on pyrenomycete
Ah, good to know.  Thanks!  How does anyone keep up with taxonomic names changes these days?  ;o)

Andy
Ethan Crenson, 08-02-2018 02:14
Re : Hysterioid ? growing on pyrenomycete
This past weekend in a park at the opposite end of NYC I found what looked like Immotthia atrograna.  Again, tiny clusters of black globose fruiting bodies growing on the stromata of some sort of Hypoxylon.  But this time rather than asci and brown didymospores, I found an anamorph with light brown unseptate conidia with (usually) two oil droplets, measuring (6) 7.5 - 9 (12) by 4 - 4.5?m.  But this is just the anamorph of I. atrograna, is it not?
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Gernot Friebes, 08-02-2018 08:21
Re : Hysterioid ? growing on pyrenomycete
Yes, it looks very much like it.

Best wishes,
Gernot