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03-04-2026 17:11

Bohan Jia

Lastly, I have found these small apothecia on a co

31-03-2026 21:18

Miguel Ãngel Ribes Miguel Ángel Ribes

Good evening. oes anyone have the original descrip

31-03-2026 20:57

Stefan Blaser

Hello everybody, I hope somebody can help me with

26-03-2026 15:31

Ãke Widgren Åke Widgren

Hello,I found this one in October last year, on r

31-03-2026 16:20

Mlcoch Patrik Mlcoch Patrik

Hello, Please about help with determination. On

31-03-2026 08:19

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

30-03-2026 12:18

Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

30-03-2026 12:03

William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

25-03-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a dead b

28-03-2026 17:41

Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

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