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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

28-04-2026 20:07

Marthamycetales? - from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

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

14-04-2026 05:32

Pyrenomycete with yellow subiculum on Aralia
Ethan Crenson

Hi all, A few weeks back a friend pointed out som

28-04-2026 20:33

Parasite on Trochila ilicina?
Vitus Schäfftlein

Hello, I found Trochila ilicina on Ilex aquifoliu

30-04-2026 10:43

Calycina ??
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, España, 

30-04-2026 10:28

Lecanicillium tenuipes?
Rot Bojan

Hello, by appearance I would say that I am dealing

27-04-2026 18:48

Micropodia pteridina?
Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 20:52

Mollisia or related genus from Portugal - with quite peculiar character
Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

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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