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25-01-2026 23:23

Delitschia/Lojkania? on wood
Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

06-02-2026 01:14

Amniculicola
Tomaz Vucko Tomaz Vucko

Hello!How would you name this species? Most perith

04-08-2014 17:35

Pachyella 1898
Leandro Sánchez Leandro Sánchez

Sur branche de feuillus, jusqu'à 22 mm diamètre,

05-02-2026 15:07

Asco in Pinus halepensis
Vasileios Kaounas Vasileios Kaounas

Found on a fallen needle of Pinus halepensis, diam

05-02-2026 06:43

At first glance, a Nitschkia, but...
Stefan Blaser

Hello everybody, Any help on this one would be mu

18-08-2025 15:07

pyrenomycete on dead parts of foliose liverwort from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Lichénicole sur Lobaria
Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Lichénicole sur Peltigera
Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Lichenicole hypocreale
Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

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Lachnum cf. crystallinum
Andrés Valverde Valera, 30-04-2020 11:47
Andrés Valverde ValeraBonjour, 
Je vous envoie ces images d'un échantillon de Lachnum, trouvé sur une brindille de Corylus, dans une forêt humide des Pyrenées catalanes. 
Coupe 0,8-0,9 mm diamètre. Pied 0,5-0,6 mm d'haut. 
Asques 34,8 – 40,8 x 5,1 – 5,5 µm.
Spores 7,7 – 10 x 1,5-2,7 µm.
Poils avec incrustations, légèrement élargis au sommet, 25,7-28,2 x 2,6-3,3 µm.
Paraphyses terminées en point, 53,7-53,9 x 3,7-3,9 µm.
Je pense en Lachnum crystallinum, mais je ne suis pas sûr du tout.
Merci d'avance pour votre aide, 

Andrés
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Lothar Krieglsteiner, 30-04-2020 12:01
Lothar Krieglsteiner
Re : Lachnum cf. crystallinum

Hello Andres,


your Lachnum (s.str.) cannot be L. crystallinum (former Dasyscyphella crystallina) because of the hairs that are granulate to the top. Further, this species grows on Quercus only (?).


Which Lachnum you have found is difficult to say, because we for instance do not know if there are croziers at the base of the asci.


As I see, the paraphyses do not contain (many) vacuoles, and there are no crystals on the top of the hairs.


Best, Lothar

Andrés Valverde Valera, 30-04-2020 12:51
Andrés Valverde Valera
Re : Lachnum cf. crystallinum
Hello Lothar, 
Thank you very much for your answer.
I add two more photos, of the squash of the asci. Luckily I think I could have seen some croziers... and a paraphyse with more vacuolar content? 

Best, 
Andrés 

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Hans-Otto Baral, 30-04-2020 14:11
Hans-Otto Baral
Re : Lachnum cf. crystallinum
Hi Andrés

indeed you have a Lachnum species with multiguttulate paraphyses (the vacuolar bodies are very sensitive and disappear upon presure or when mounting in KOH etc.).

I see a slight reddening of the apos on your macro, this is due to the presence of these VB-guttules that easily get oxidated.

The circle around the ascus base shows rather a simple-septate ascus, but it could be hidden behind.

If the hairs would be more capitate I tend to L. pudibundum. Are the hairs really that short?
Andrés Valverde Valera, 30-04-2020 16:20
Andrés Valverde Valera
Re : Lachnum cf. crystallinum
Thank you very much Zotto! 
About the hairs, it's the length that I could measure, from the top of the hair to the most dense and colored part (I can't ruled out that they will continue in this part). I'm going to try to separate these hairs. 

Andrés