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07-05-2026 11:02

Delitschia sp.
Ã…ke Widgren Ã…ke Widgren

Hello,About two months ago I found a strange Delit

05-05-2026 22:40

Plagiostoma on Salix
Gernot Friebes

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

06-05-2026 11:25

En excrementos de caballo
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España) re

06-05-2026 17:23

A apiosporous bitunicate on decaying Betula leaves - spores with thick slime coats - denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10594257

28-04-2026 20:07

Marthamycetales? - from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

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

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

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

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Possibly Helotiaceae? White/Off-white discomycete
Ethan Crenson, 29-01-2024 18:16
Hello,

Can anyone help ID this discomycete. White recepticle, with off-white hymenium. 

Spores:
Hyaline, with one or two guttules, small, broadly ellipsoid, but in some cases fusiform, longer spores occasionally allantoid.

2.6-4.4 x 1.3-1.8µm
Me: 3.3 x 1.5µm


Asci:
8 spored, IKI+, biseriate, with croziers
30-33 x 4.7-5.0µm


Ectal excipulum hairs: 2.2-2.6µm wide, encrusted with yellowish refractive lumps.


Medullary excipulum, textura globosa to angularis


Paraphyses 1.8µm wide, cylindrical.

Any suggestions?

Thanks,

Ethan
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Hans-Otto Baral, 29-01-2024 20:26
Hans-Otto Baral
Re : Possibly Helotiaceae? White/Off-white discomycete
This looks much like Hyphodiscus smaragdinus (earlier Hyphodiscus viridipilosus). Known ?only from Europe.
Ethan Crenson, 29-01-2024 20:28
Re : Possibly Helotiaceae? White/Off-white discomycete
Thank you, Zotto!  Another Hyphodiscus!  I seem to find them quite a bit.  I wish I had more material or I would attempt to sequence it.
Hans-Otto Baral, 29-01-2024 21:07
Hans-Otto Baral
Re : Possibly Helotiaceae? White/Off-white discomycete
A European sequence exists but it does not seem to be in GenBank.
Ethan Crenson, 29-01-2024 22:20
Re : Possibly Helotiaceae? White/Off-white discomycete
This appears to be the third species of Hyphodiscus that I have collected in the NYC metropolitan area. Hyphodiscus hymeniophilus in Great Swamp, New Jersey and Hyphodiscus theiodeus on a stick I had brought home from somewhere and left for months in my backyard. I feel I should be able to at least recognize the characteristics that define the genus, but obviously I'm not there yet.
Hans-Otto Baral, 30-01-2024 10:17
Hans-Otto Baral
Re : Possibly Helotiaceae? White/Off-white discomycete
Definition of the genus is not that easy, as often in taxonomy. In summary: Short stipes, warted (often tuberculate) hairs, small ellipsoid to fusoid spores, gelatinised ectal excipulum.

Do you know the paper by Quijada et al. on Hyphodiscaceae? It gives a generic diagnosis and a key to species.
Ethan Crenson, 30-01-2024 16:50
Re : Possibly Helotiaceae? White/Off-white discomycete
Thank you for the synopsis of the genus!  I have the Quijada paper and will study it.