Accès membres

Mot de passe perdu? S'inscrire

03-04-2025 15:33

Tomaz Vucko Tomaz Vucko

Hello! I found an interesting dothideomycete in a

03-04-2025 12:44

Castillo Joseba Castillo Joseba

Me mandan en matgerial seco de Galicia (España),Â

03-04-2025 21:31

Francois Guay Francois Guay

Hi, I found this interesting ascomycete on incuba

03-04-2025 18:26

Lennert Gees

Hello there!I found this species on dung of an unk

03-04-2025 16:45

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España), 

01-04-2025 23:18

Yanick BOULANGER

BonsoirRécolté par un ami sur dans un tas de bra

29-03-2025 09:08

Martine  Vandeplanque Martine Vandeplanque

Bonjour.J’ai essayé d’étudier un Daldinia.Qu

30-03-2025 10:24

Gonzalez Garcia Marta

Good morning, I would like to know the opinion of

01-04-2025 10:35

Yanick BOULANGER

BonjourSur bois très pourriApothécie 0,2 - 0,5 m

31-03-2025 17:01

akcay mustafa emre

Hello everyone, My name is Mustafa Emre Akçay, a

« < 1 2 3 4 5 > »
Hyaloscypha auriella
Steve Clements, 21-07-2016 11:00
Bonjour,
Nous avons trouvé cet disco sur un rondin de pin, avec le basidio Trechispora mollusca. Il est tres beau!

We found this tiny disco on a pine log growing with the basidiomycete resupinate fungus Trechispora mollusca. It was sessile, up to 6mm diameter. The most striking feature were the bright yellow tips to the hairs. These were difficult to see in a liquid mount as the encrustation tended to disperse. The hairs seem to be covered in droplets rather than crystals. From Peter Thompson's "Ascomycetes in Colour" I considered Hyaloscypha auriella, as the droplets could perhaps be what he describes as "pieces of resin". The hairs were however rather longer than he says, being over 50 um long. They were pointed.
Spores were slighly curved, 8-11 x 2.5, hyaline, no obvious guttules noted.
Asci were typically 45 x 7, biseriate, non-operculate, blueing in Lugol.
Paraphyses were thread-like, 1.5 wide.

Cordialement,
Steve
  • message #43956
  • message #43956
  • message #43956
  • message #43956
  • message #43956
  • message #43956
Hans-Otto Baral, 21-07-2016 11:33
Hans-Otto Baral
Re : Hyaloscypha auriella
Yes, it is very typical H. aureliella. Indeed, the yellow substance is currently referred to as resinous. If you add Cresyl Blue this exudate stains turquoise, while in KOH it disappears/dissolves.
If you have these reagents please check.

I compared this exudate with that in Orbilia, which is very different in that it is inert to KOH. CRB gives a blue stain too, phloxin a bright pink stain, and Congo Red stains it red. The latter two reagents I never tested with this Hyaloscypha resin.

Zotto
Steve Clements, 21-07-2016 20:38
Re : Hyaloscypha auriella
Thank you very much Zotto,
The pictures in Peter Thompson's book are not very good so I was very unsure - but it is still an excellent resource.
I have Cresyl Blue and KOH (as I have inherited a large collection of reagents),
With best regards,
Steve