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03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

30-10-2025 03:53

Ethan Crenson

Hi all,  I would like an opinion on whether this

09-08-2025 13:13

Maria Plekkenpol Maria Plekkenpol

Hello,Yesterday I found these on burnt soil. Apoth

29-10-2025 19:02

Castillo Joseba Castillo Joseba

De la pasada semana en rama posiblemente de hayaPi

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Yellow Lachnum
Marja Pennanen, 15-06-2011 00:05
Hello folks,

I've seen this yellow hairy one for three years on grasses in the same small damp place on a field.
They are about 1 mm high and the cup is up to 0,5 mm wide.
The yellow colour comes from paraphyses and hairs.
This seems to be a combination of L. tenuissimum and L. carneolum var. longisporum.
Spores: 10-15x1,5-2.
Asci: about 30-60x4.
Paraphyses: lanceolate, yellow , up to 6 wide, about 20 exceeding the asci.
Hairs: 40-50x4-6, swollen at tips, yellow based.

Once again help is needed, because none of my sources has a description of anything like this...

Marja

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  • message #15595
  • message #15595
  • message #15595
Hans-Otto Baral, 15-06-2011 00:09
Hans-Otto Baral
Re : Yellow Lachnum
Hi Marja

I wonder whether the spores are really that long. L. carneolum has non-capitate hairs, and I do not know it with yellow VBs. L. tenuissimum (I use the name pudicellum) may have yellow VBs, and I think this is only a colour variant.

Zotto
Marja Pennanen, 20-06-2011 14:55
Re : Yellow Lachnum
Hi,

I contacted Marketa and she told me, that this could be not so often collected Dasyscyphus winteri (Cooke) Svr?ek.
No wonder I (and maybe Zotto, too) had severe difficulties with the determination...

Marja

Hans-Otto Baral, 20-06-2011 15:56
Hans-Otto Baral
Re : Yellow Lachnum
Lachnum winteri (Cooke) Velen. is a species perhaps confined to Phragmites and, like L. controversum and L. tenuissimum/pudicellum, without croziers (in case you see that). But L. winteri and L. controversum have apically hardly inflated hairs, whereas L. tenuissimum/pudic. have capiate hairs. I think yours look much too capitate for L. winteri.

Zotto
Marja Pennanen, 20-06-2011 17:38
Re : Yellow Lachnum
Thank you.

I should once again go and check weather I can still find this. The midsummer fest is approaching and I'm going to our county place. I'll go hunting this, if the insicts let me.  If it has vanished then next spring or early summer. I have only a scanty specimen.

This grew together with a bigger Lachnum, L. carneolum var. longisporum?, if I remember correct. I checked, but made no notes, because I have studied that so many times before.

You know, that croziers are a bit too hard for me, but I won't still give up: Marja


Marja Pennanen, 21-06-2011 12:06
Re : Yellow Lachnum
I remembered collecting this more and now finally found some from my boxes.
I studied it for croziers and think I saw one, but the asci bases do not support that.

I measured many spore lenghts in 1000x and they are really 7-15  (9,10,13,12,13,8,7,11,15,14,12...). They seem too long for L. tenuissimum.
All the hairs are not capitate and they may be a little over 50 long.

Marja