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30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

29-06-2025 18:11

Ethan Crenson

Hello all, A friend found this disco yesterday in

28-06-2025 17:10

Peter Welt Peter Welt

I'm looking for: RANALLI, M.E., GAMUNDÍ, I.J. 19

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

27-06-2025 14:09

Åge Oterhals

I found this pyrenomycetous fungi in mountain area

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lachnum controversum
Ismael Wind, 15-05-2012 23:57
I'm asuming this is L controversum Found on Phragmites, spores 11-12.5 * 1.8-2.5. I'm confused because of the dark tufts. Is that normal?
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Hans-Otto Baral, 16-05-2012 08:57
Hans-Otto Baral
Re : lachnum controversum
Hi

I do not understand what you mean with dark tufts. The quite uninflated hair tips speak for controversum., at least in a broad sense (there is also a L. winteri which has suich large spores, but is usually yellow).

Important would be to look for the croziers which are absent in controversum. Also, the living paraphyses and hairs need to be filled with conspicuous droplets (VBs) that evoke the reddening of the bruised apothecia.

Zotto
René Dougoud, 16-05-2012 09:17
Re : lachnum controversum
Cher Collègue,

Voici quelques documents photographiques et dessins de cette belle espèce, ici sur Phragmites australis

Cordialement

René
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Hans-Otto Baral, 16-05-2012 09:27
Hans-Otto Baral
Re : lachnum controversum
I add two drawings of mine, one showing the absence of croziers, the other that adding KOH completely removes the VBs.



Zotto
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Ismael Wind, 16-05-2012 09:29
Re : lachnum controversum
with dark tufts i mean picture 3. Picture 6 shows why its red i suppose. I will look for VB's. If those are not there it is winteri?
Ismael Wind, 16-05-2012 09:32
Re : lachnum controversum
thanks for those pictures! Makes it clear. What exactly is crozier? Hooks at the bottom?...
Hans-Otto Baral, 16-05-2012 09:33
Hans-Otto Baral
Re : lachnum controversum
Both controversum and winteri have VBs. In winteri they are often bright yellow, but I am not sure whether winteri may aölso occur in a white form and differs from controversum in larger spores. Also I think that croziers are absent in both.

The dark tufts is air being trapped between the rough hairs.

Croziers: two septa at the ascus base, one forming a bow at the cell below.

Zotto
Ismael Wind, 16-05-2012 09:59
Re : lachnum controversum
air, i wouldnt have thought that! So the entire margin as seen on picture 5 is trapped air?
Hans-Otto Baral, 16-05-2012 10:03
Hans-Otto Baral
Re : lachnum controversum
Yes, I would say so. It is quite difficult to remove such disturbing air. I tried with SDS but maybe I do not have enough patience, and maybe such detergents are also a bit toxic to the fungus.
Ismael Wind, 16-05-2012 10:42
Re : lachnum controversum
well tried to focus on ascus. It does seem to have septs. Tried to get a good picture failed sorry.. Hope picture brings some clarity. Last picture VB in parafyse
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Hans-Otto Baral, 16-05-2012 11:18
Hans-Otto Baral
Re : lachnum controversum
Could be, but your pictures are not sharp enough, sorry
Ismael Wind, 16-05-2012 11:46
Re : lachnum controversum
it does have septs just cant get a clear picture
Hans-Otto Baral, 16-05-2012 11:49
Hans-Otto Baral
Re : lachnum controversum
It is actually possible from detached asci to recognize the absence of croziers.
If you see only a truncate ascus base with one septum, then it is quite clearly without croziers.


The reverse ( presence of croziers) is not so clear thereby.

Ismael Wind, 16-05-2012 11:53
Re : lachnum controversum
aha one learns everyday! im just a beginner. then it hasnt croziers. so controversum then yes?
Hans-Otto Baral, 16-05-2012 11:57
Hans-Otto Baral
Re : lachnum controversum
in a wide sense yes. The problem with L. winteri is still not very clear to me, I mean generally. If L. winteri can also be white, yours could be that species.