Accès membres

Mot de passe perdu? S'inscrire

26-12-2025 21:19

Arnold Büschlen

Pithyella chalaudii Priou. Ist als Bryoparasit in

21-12-2025 09:32

Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

18-12-2025 21:17

Pol Debaenst

The identification took me to Byssonectria deformi

21-12-2025 12:34

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

24-12-2025 17:08

Hulda Caroline Holte

Hello, I have found this propoloid ascomycete on

24-12-2025 18:12

Ethan Crenson

Hello all, A friend found this Orbilia growing on

23-12-2025 11:27

Louis DENY

bonjour forum,sur débris de bois de feuillu (acer

20-12-2025 10:49

Mirek Gryc

Hi. „I doubt it is possible to identify this ti

23-12-2025 08:27

Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

21-12-2025 21:32

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

« < 1 2 3 4 5 > »
On Pseudotsuga
Enrique Rubio, 14-05-2022 21:03
Enrique RubioThese sessile or subsessile apothecia, more or less turbinate, allways isolated, never in groups,  0.2-0.7 mm in diameter and blackish-brown in colour, erumpent through the bark of branches fallen to the ground in a plantation of Pseudotsuga menziesii at 1300 m of altitude in northern Spain .
The apothecia have no ionomidotic reaction in KOH and the asci form very scanty primary ascosspores, difficult to see, but probably broadly ellipsoidal or subspherical, and finally the asci are filled with a multitude of small, subcylindrical to nearly allantoid, hyaline ascoconidia.
From the appearance of the primary spore it could perhaps be Tympanis tsugae Groves, which may now belong to Claussenomyces or Vexillomyces.

What do you think?

  • message #72742
  • message #72742
  • message #72742
  • message #72742
Hans-Otto Baral, 14-05-2022 21:21
Hans-Otto Baral
Re : On Pseudotsuga
Hi Enrique

not sure what Tympanis tsugae is but surely this is a Tympanis, not a Vexillomyces. The globose non-septate spores which form a short germ tube inside the living asci are diagnostic. Also the red-brown excipulum does not fit a Vexillomyces.

Ouellette & Pirozynsky used the germination pattern as species marker, but Tympanis is a difficult genus, probably not really settled.

Zotto
Enrique Rubio, 14-05-2022 21:26
Enrique Rubio
Re : On Pseudotsuga
Thank you, Zotto
When studying this paper and although I do not see the germination of the primary spore at all well, I turned to this species. But, as you, I'm not sure.
Enrique Rubio, 14-05-2022 21:37
Enrique Rubio
Re : On Pseudotsuga
By the way, where is your folder on Tympanidaceae?