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15-04-2015 22:57

Quijada Luis

Hi all, somebody has the following manuscript:Kor

15-04-2015 16:48

Eduard Osieck

Capronia with partly submuriform spores: 16-19 x 5

12-01-2015 03:08

Nick Aplin

Salut Ascofrance, I wonder if anyone can help me

15-04-2015 17:38

Martin Pastircak

Hi, I'm looking for the following one publicatio

14-04-2015 17:56

Camille Mertens

Bonjour à tous. Trouvée entre les pavés d'une

14-04-2015 20:34

Steve Clements

Hi,This is one which i thought would be relatively

12-04-2015 22:32

Bernard CLESSE Bernard CLESSE

Bonsoir à tous,Voici un autre asco poussant sur b

13-04-2015 20:05

Enrique Rubio Enrique Rubio

Hi to everybody I know Hypcopra is a very difficu

14-04-2015 07:58

Blasco Rafael Blasco Rafael

Hola , tengo esta pequeña muestra recogida sobre

14-04-2015 18:47

Enrique Rubio Enrique Rubio

Hi again I think this fungus found on old Juncus

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Lachnum(?) on fern
Stefan Jakobsson, 31-05-2022 02:53
I found a hairy discomycete on an old petiole of Athyrium filix-femina on the verge of a forest stream in Southern Finland.

The apos are centrally attached, subsessile, up to half a mm diameter excluding hairs, light beige.


The marginal hairs are 102-137 × 5.8-7.1 µm, tapering to a point, without crystals, only slighly refractive content, 5-7 times septate, faintly granulose but perhaps not all the way to the very apex. In addition also some shorter hairs less acute, granulose to the apex.


The asci are 34-44 × 3.8-5.5 µm, eight-spored, without croziers, spores biseriate, apex slightly blue with IKI.


The paraphyses are 53-63 × 4.3-5.4 µm, lanceolate, with low-refractive content, protruding 15-25 µm beyond the ascus tips.


The spores are 6.8-9.1 × 1.5-1.8 µm, Q = 3.9-5.4, oil 0.


A few hairs (perhaps 1-2 percent) develop one or a few red brown internal droplets within a few minutes after addition on Lugol.


I have not found many species of neither Dasyscyphella nor Lachnum on ferns in the litterature and not either anything else matching. Perhaps somebody has an idea?


If someone has access to the following paper I would be greatful for a copy:


Bøhler HC (1974) Taxonomical studies on some Norwegian Helotiales (Ascomycetes) on fern remains. Norw J Bot 21:79–100.


Stefan

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Hans-Otto Baral, 31-05-2022 07:38
Hans-Otto Baral
Re : Lachnum(?) on fern
Great find and docu! This must be Lachnaster miniatus (now Psilachnum miniatum).

The protologue also includes rough hairs, unlike the other collections in my folder which is in Psilachnum in Pezizellaceae. What is considered synonymous, Lachnum wasingtonense, has apparently smooth hairs, though not explicitely stated.

This would be worth to be sequenced as I am not at all sure that a Psilachnum may possess warted hairs.
Stefan Jakobsson, 31-05-2022 18:52
Re : Lachnum(?) on fern
Thank you! As a matter of fact I had checked out the Psilachnums. This one was, however, so much bigger than other Psilachnums I have seen, so I rejected the idea. Also, I didn't see a Psilachnum bubble in the asci. The miniatus description gives a size of 0,1 mm while this one was mostly 0,5 mm.

I'll see what I can do with the sequncing.


Stefan

Hans-Otto Baral, 31-05-2022 20:18
Hans-Otto Baral
Re : Lachnum(?) on fern
It is correct that this species appears to be unable to form the ascus bubble. It has unusual characters, so maybe it is not a real Psilachnum, but what then?