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04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

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

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Lachnellula subtilissima, but not quite!?
Hardware Tony, 06-01-2024 20:49
Hardware TonyRecently found a gergarious group of what appears to be a Lachnellula species on probably a fallen Pinus branch. All looks reasonable for L. subtilissima except some paraphyses have 'spear-headed' tips or spathulate-lanceolate ends. Some are rounded cylindrical as perhaps expected. The other question relates to the hairs where some seem to have crystals forming at their tips. Some rounded some blunt ended. Marginal hairs white at first soon changing to yellow. 

Any help would be very much apprecaited.  
Full description in the attched file:
Hans-Otto Baral, 06-01-2024 21:39
Hans-Otto Baral
Re : Lachnellula subtilissima, but not quite!?
The colour sounds strange although your last pic looks typical. I see one paraphysis with orange droplets. Alternatively I considered L. pulverulenta (in my files still in Dasyscyphella), but there the asci must be with croziers and no orange hymenium occurs. Besides, the substrate is inus needles.
Ingo Wagner, 07-01-2024 00:16
Ingo Wagner
Re : Lachnellula subtilissima, but not quite!?
Hello!

Why not use a dye like Congo Red SDS for something like this?
I'm sure your find is croziers+.

Greetings
Ingo
  • message #77843
Hardware Tony, 07-01-2024 16:31
Hardware Tony
Re : Lachnellula subtilissima, but not quite!?
With thanks Otto and Ingo for your comments. Lachnum pulverulentum had been my first choice but let this go due to macro colour differences especially on the hymenium. However, I hopefully have corrected my mistake that Ingo suggested and that Croziers exist as shown here. I have added other pics of the paraphyses as I couldn't find any other orange droplets. There was also no orange resin collected on the hairs tips when drying. The paraphyses slight lanceolated tips suggest more a Lachnum sps perhaps? The hairs were seen to contain 4-5 curved septa. 

with thanks again, perhaps this shouild be Lachnum pulverulentum?
  • message #77850
  • message #77850
Hans-Otto Baral, 07-01-2024 16:42
Hans-Otto Baral
Re : Lachnellula subtilissima, but not quite!?
No, this looks clearly without croziers to me, which rules out pulverulentum.
Hardware Tony, 07-01-2024 20:28
Hardware Tony
Re : Lachnellula subtilissima, but not quite!?
Thanks Otto, confirms my original thoughts but was never great on croziers. All points to my original suggestion of L. subtilissima as I can't see anything else that gets this close.

Thanks again for your input.
Ingo Wagner, 07-01-2024 23:05
Ingo Wagner
Re : Lachnellula subtilissima, but not quite!?
Yes, now it is better and I believe croziers-.


Guy Marson, 08-01-2024 11:34
Re : Lachnellula subtilissima, but not quite!?
Hi Tony, 


You can probably improve color artifacts by choosing a 6000 - 6500° Kelvin light source. LEDs are often poorly suited to reproduce natural colors. Natural daylight without direct sunlight is likely to make this Lachnellula's hairs appear less yellow. One tip is to include a narrow strip of really white paper in each macro photo.

Kind regards, 
Guy
Hardware Tony, 08-01-2024 17:48
Hardware Tony
Re : Lachnellula subtilissima, but not quite!?
Hi Guy, thks for your comments. I'm sure you are right, but in this instance I took the macro in the field in low natural light (no sunlight) and was looking for the whiteness of the hairs which showed here. If anything it is the light source at the camera on the scope that over compensated and the margin should look paler yellow. A direct natural light source would be better at this stage perhaps. regards
Guy Marson, 08-01-2024 23:44
Re : Lachnellula subtilissima, but not quite!?
Hi Tony, 

If I was aware that discoloration could occur after collection, I usually photographed the white strip of paper (placed in a corner) so that a subsequent white balance was possible when editing the image. It's crazy that after the invention of white power LEDs, there are almost no lights that emit the full spectrum (i.e. the equivalent of sunlight) anymore. The old halogen lamps had a very good spectrum, but are now rarely used for macro photography of small mushrooms because the IR content is very high, which means that small mushrooms dry out quickly.
That's enough off-topic for now. 
Regards,
Guy