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21-01-2026 19:55

Bohan Jia

Hi,  Could this be Nemania aureolutea? Or did I

21-01-2026 16:32

Gernot Friebes

Hi,I need your help with some black dots on a lich

21-01-2026 16:48

Gernot Friebes

Hi,after my last unknown hyphomycete on this subst

20-01-2026 17:49

Hardware Tony Hardware Tony

I offer this collection as a possibility only as e

15-01-2026 15:55

Lothar Krieglsteiner Lothar Krieglsteiner

this one is especially interesting for me because

03-01-2026 15:36

éric ROMERO éric ROMERO

Bonjour, Pouvez-vous me dire quel est le nom à p

19-01-2026 12:01

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España) 

17-01-2026 19:35

Arnold Büschlen

Hallo, ich suche zu Cosmospora aurantiicola Lite

16-01-2026 00:45

Ethan Crenson

Hi all, On decorticated hardwood from a New York

18-01-2026 12:24

Josep Torres Josep Torres

Hello.An anamorph located on the surface of a thin

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curious small pyreno on dead salix sprouts
Björn Wergen, 29-02-2012 15:40
Björn WergenHi again,

it is fantastic, everywhere you go, you'll come across with all sorts of ascomycetes. Not so fantastic is my inability to identify these ascomycetes (ah you will see some of my easy identified ascos in the database). Well, here is something strange on old hanging salix sprouts. It has small 80-150µm broad, dark grey pseudothecia which seem to be partly immersed. The pseudothecia wall is about 10-20µm thick and consists of dark cells in textura epidermoidea. 
Spores 14,5-18 (one spore up to 22) x 3-4,5µm, long ellispoid, first with no septa, then with a single one and at maturity with 3 septa, slightly constricted at each septa, hyaline, smooth, filled with small oil drops. Asci 55-60x9-11µm, with 8 spores in a biseriate arrangement, tapered at apex and in result of this mostly fusiform, bitunicate. Paraphyses small cylindrical, with septa, hyalin, mostly brunched especially in basal parts, at the septa or tips not tapered and not swollen.

The curious thing is the ascus shape (fusiform with tapered tips) and the small fruitbodies looking like Mycosphaerella sp., which are almost leaf inhabiting fungi. So I am sorry, I have no idea :/

Perhaps you can help me. Thanks for this :)

regards,
björn
  • message #17577
  • message #17577
  • message #17577
  • message #17577
Björn Wergen, 29-02-2012 16:31
Björn Wergen
Re : curious small pyreno on dead salix sprouts
Hi Yan,

I think there are pseudothecia. I have thought about a lichen, but this is rather a new area for me and hard to identify :(
Hans-Otto Baral, 29-02-2012 17:51
Hans-Otto Baral
Re : curious small pyreno on dead salix sprouts
By chance I had this lichen recently. I am quite sure you have Porina aenea (Porinaceae, Ostropomycetidae).

I had it on bark of an attached Prunus spinosa branch in a more dense forest.

Zotto
Björn Wergen, 29-02-2012 17:59
Björn Wergen
Re : curious small pyreno on dead salix sprouts
wow many thanks Zotto, this is great :)

regards
björn