Accès membres

Mot de passe perdu? S'inscrire

26-02-2026 22:06

Malcolm  Greaves Malcolm Greaves

Can someone explain the features that split Geoscy

26-02-2026 15:00

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, recolectada

24-02-2026 00:21

Benoît Segerer

Hello,I'm new to this forum, I hope I won't be irr

24-02-2026 11:01

Gernot Friebes

Hi,found on a branch of Tilia, with conidia measur

23-02-2026 11:22

Thomas Læssøe

https://svampe.databasen.org/observations/10584971

29-11-2024 21:47

Yanick BOULANGER

BonjourJ'avais un deuxième échantillon moins mat

07-02-2023 22:28

Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

« < 1 2 3 4 5 > »
Hyphodiscus species
Marcus Yeo, 01-12-2013 22:33
This discomycete was growing on a decorticated fallen branch of a deciduous tree in woodland. Most apothecia were growing on an indeterminate fungal crust, some were growing directly on wood.

Apothecia are sessile, ca 0.3 mm diameter; the hymenium is light brown with incurved margins.


Excipulum is a textura oblita, strongly gelatinised.


Hairs are 10-20 x 3-4 µm; very rough; with yellow pigment.


Asci are 40-45 x 5 µm, 8-spored, with a weak red reaction in IKI.


Spores are 5-6 (-7) x 2-3 µm, with 2 small oil bodies.


Paraphyses are ca 1-1.5 µm wide, with non-refractive contents.


The combination of characters indicate a Hyphodiscus. The closest fit seems to be H. hymeniophilus, but I'm not sure whether some of the characters (e.g. hairs with yellow pigment) fit this species.

I'd be grateful for any advice.

Thanks

Marcus    

  • message #26056
  • message #26056
  • message #26056
  • message #26056
  • message #26056
  • message #26056
  • message #26056
  • message #26056
Hans-Otto Baral, 01-12-2013 22:40
Hans-Otto Baral
Re : Hyphodiscus species
Hi Marcus

Yes, Hyphodiscus. But I am not sure if the  spores fit hymeniophilus. The yellow pigment is not a constant character.

It is a very difficult genus!
Zotto
Marcus Yeo, 01-12-2013 22:52
Re : Hyphodiscus species
Zotto

Many thanks for your reply. If you think it is a difficult genus, then there is little hope for the rest of us!

The other species I considered is the taxon you call H. "hemiamyloideus" but the spores didn't seem quite right in size and guttulation.

Marcus
Hans-Otto Baral, 01-12-2013 22:58
Hans-Otto Baral
Re : Hyphodiscus species
yes, hemiamyloideus is not impossible but tends to shorter spores.

was it impossible to see a reddish IKI reaction?
Marcus Yeo, 01-12-2013 23:09
Re : Hyphodiscus species
Yes, there was a definite red reaction in IKI - not very strong, but definitely present.