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21-05-2025 17:28

Anthostomella tomicoides ?
éric ROMERO éric ROMERO

Bonjour Tous, Avec la bonne fiche cette fois (mer

19-05-2025 09:42

Whitish Discomycete
Josep Torres Josep Torres

Hello.An ascomycete photographed on April 20, spro

21-05-2025 08:31

Another anamorph in Rubus spp.
Josep Torres Josep Torres

Reddish-brown, grain-like ascomata, measuring 0.7â

20-05-2025 09:37

Anamorph on Rubus.
Josep Torres Josep Torres

Hello, an anamorph photographed last April 20th, s

20-05-2025 22:15

Asco at the base of decaying fern
Francois Guay Francois Guay

I found this ascomycete at the base of a dead fern

20-05-2025 21:36

Mollisia sp. on submerged herbaceous stem
Francois Guay Francois Guay

I found this Mollisia sp. on a submerged herbaceou

20-05-2025 10:31

Ciboria ??
Castillo Joseba Castillo Joseba

me mandan elmaterial seco de Galicia, (España) 

16-05-2025 05:47

Hyaline asco on fir needles
Francois Guay Francois Guay

I found this super tiny hyaline asco on fir needle

11-05-2025 10:22

Velutarina-like disco
Karl Soler Kinnerbäck

Found on moist Betula wood dipped in freshwater st

18-05-2025 16:49

Ascobolus michaudii with possible bycatch Pyxidiophora arvernensis?
François Bartholomeeusen

Dear forum members,On cow dung, between fruiting b

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Pyreno on Arundo donax with apiospores and hemiamyloid asci
Enrique Rubio, 28-03-2016 20:42
Enrique RubioHi to everybody

Looking for fungi on Arundo donax I have found these very small roundish, blackish, inmersed perithecia up to 100-120 microns, more or less arranged in rows and covered by a melanised periderm on dead leaves lying on the ground. Only protruding the roundish papillate necks. The shortly stipitate asci have a conspicuous refractive apical hemiamyloid apparatus (deep blue after KOH-pret.) and hyaline apiospores.


I feel this fungus might belong, or to be near to the genus Pseudomassaria, or into the Diaporthales?.


Have you some idea for help me?


Many thanks in advance


The collection was made at the Botanical Garden of Gijón (north of Spain), at the sea level

  • message #41833
  • message #41833
  • message #41833
Jacques Fournier, 28-03-2016 22:46
Jacques Fournier
Re : Pyreno on Arundo donax with apiospores and hemiamyloid asci
Hola Enrique,
why was I sure you were currently scrutinizing Arundo donax?
Your fungus is very distinctive, I agree with you about Pseudomassaria, or more likely Leiosphaerella because of the very small perithecia.
Did you check Jaklitsch & Voglmayr 2012, Fungal Diversity 52: 75-98? There is not your fungus but sound information on the generic delimitation.
Good luck with your search!

Jacques
Hermann Voglmayr, 28-03-2016 23:24
Hermann Voglmayr
Re : Pyreno on Arundo donax with apiospores and hemiamyloid asci
Hi Enrique, on Arundo, check for Apiospora montagnei or A. striola...
All best Hermann
Enrique Rubio, 29-03-2016 01:44
Enrique Rubio
Re : Pyreno on Arundo donax with apiospores and hemiamyloid asci

Hi Jacques and Hermann. Thank you for help me. Yes, I had read this paper and, as you say me, maybe Leiosphaerella could be a good genus for it, but I must to search more information about it....Yes, I was not lucky with your fungus on Arundo but I will insist. 


Hermann, my first impression was Apiospora montagnei but I think this genus lacks and apical apparatus at the asci (Hyde & al, Sydowia 50(1): 21-80) and for it I rejected this possibility.