Accès membres

Mot de passe perdu? S'inscrire

29-06-2016 15:18

Per Vetlesen

HiIt was found on the bark of a dead branch of Jun

07-01-2018 22:47

Per Vetlesen

Grown in moist chamber on bark/resin of fallen Pin

06-04-2026 15:04

David Chapados David Chapados

Hi! Could someone help me identifying this specim

06-04-2026 21:36

Viktorie Halasu Viktorie Halasu

Hello, could anyone please send me the article wi

06-04-2026 19:40

David Gibbs David Gibbs

Help with this one much appreciated, on rotting Fa

06-04-2026 11:07

Louis DENY

Bonjour forum, Trouvé sur bois de feuillu très d

06-04-2026 16:24

Juuso Äikäs

Last Tuesday I found some tiny white Helotiales gr

05-04-2026 13:33

Sylvie Le Goff

Bonjour à tousPuis avoir votre avis sur ce champi

05-04-2026 20:40

Robin Isaksson Robin Isaksson

Hi!Found i Japan on bark of Abies sp. Spores 35-4

06-04-2026 08:15

Lothar Krieglsteiner Lothar Krieglsteiner

some days ago, on the lower surface of leaf of Que

« < 1 2 3 4 5 > »
Geoglossum sp. x2
Andy Overall, 24-12-2014 15:34
Would somebody be able to give me some assistance with these two Earth Tongues please. I have provided in situ shots and micro images of spores, asci and paraphyses. The fruit bodies were from different sites around Hampstead Heath. The first image on sandy soil among mosses in short grass, dry throughout..45-55mm x 2-3mm. The spores of the first specimen seemed to be late in forming septa, the paraphyses are straight with slightly swollen tips and septate in some. The second specimen has early forming septa and hosiery-like paraphyses. The second was growing in similar conditions to the first, is slightly taller and maybe a little wider. The photo of the 2nd fruit body is terribly out of focus, apologies..... I've only included it to give some idea at least of shape. This was dry throughout also. What I find intriguing about the second specimen is the constricted areas between septa on the spores, and the spear headed-like spores inside one of the asci..thanks in advance.
  • message #32840
  • message #32840
  • message #32840
  • message #32840
  • message #32840
  • message #32840
  • message #32840
Hans-Otto Baral, 24-12-2014 17:35
Hans-Otto Baral
Re : Geoglossum sp. x2
Hi Andy

I think this need images of more and well-developed spores. I do not know what these spores with constrictions are. They look more like conidia.

Important is to look at living asci. is your material  still fresh? Take photos of asci with spores inside, and do not apply any pressure. Then you hjave the chance to see many turgescent asci. It is possible that your first specimen concerns G. fallax. if so the spores must be hyaline inside the living asci and turn brown only a reasonalbe time after ejection (or within dead asci). Most other Geoglossums eject brown spores.

Zotto
Andy Overall, 24-12-2014 18:05
Re : Geoglossum sp. x2
Thanks Otto,

The material is fairly fresh, I have been keeping them in the fridge, would this effect the structures adversely in any way?  The first specimen shows dark spores in the ascus, 1st image below, the second, for the second species, shows hyaline spores in the ascus. Would you have any idea as to what the spear-headed looking spores in the ascus of the second image may be?  Andy
  • message #32843
  • message #32843
Hans-Otto Baral, 25-12-2014 09:25
Hans-Otto Baral
Re : Geoglossum sp. x2
The left images shows a dead ascus. So this says little.

The tow asci right look alive, so they might eject hyaline spores. I never saw such swollen spore apex in Geoglossaceae. Maybe this is caused by the fridge?

here living asci that eject living spores (G. cf. hakelieri, phot. B. Fellmann).

Zotto
  • message #32848
Andy Overall, 25-12-2014 11:01
Re : Geoglossum sp. x2
Thanks Otto,  thats most useful.  Happy Christmas from London :-)