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13-02-2026 03:30

Unknown near Pseudohalonectria
Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

12-02-2026 21:34

Attaque des feuilles de Quercus suber
patrice Callard

Bonjour, la face inférieure des feuilles ce certa

11-02-2026 22:15

Rutstroemia maritima?
William Slosse William Slosse

Today, February 11, 2026, we found the following R

12-02-2026 14:55

Brown-spored and multiseptate loculo on Euonymus europaeus - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10581810

11-02-2026 19:28

Pezizaceae spec. from Germany
Lothar Krieglsteiner Lothar Krieglsteiner

on small deciduous twig on the ground in forest wi

25-04-2025 17:24

Cosmospora/Dialonectria spec.
Stefan Blaser

Hi everybody, This collection was collected by JÃ

09-02-2026 22:01

Sp
ruiz Jose

Hola, me paso esta colección en madera de pino, t

10-02-2026 17:42

Hélotiale blanche sur Sambucus racemosa
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

10-02-2026 18:54

Unknown pink heliotale on sphagnum
Erik Van Dijk

Does anyone has an idea what fungus species this m

09-02-2026 20:10

(2 different or one ?) Hypoxylon from the Algarve – on Acacia and Arbutus
Lothar Krieglsteiner Lothar Krieglsteiner

The first 6 tables show surely one species with 2

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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